- 5/24/2025
Reasoning by Piyush sir | DIRECTION AND DISTANCE CLASSES
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LearningTranscript
00:00:00you
00:00:30Good afternoon, good afternoon, good afternoon, a very good afternoon, all of you. Good afternoon,
00:00:51Gautam, Harendra, Chandan, Rahul, Pawan, Prachi, Preeti, Pinky, Aman, Divya, Mohini, Shyam,
00:00:57Shalini, Rajan, Ashwini, Santosh, Ashwin Krishna, Dimple, Rajkumar, Swetha. How are you all?
00:01:11Good, first class, wonderful, excellent, very good. So we were studying direction and distance,
00:01:21direction and distance, and how many lectures have been done, brother? Three, three lectures have been done,
00:01:29okay, and I hope that if you have not yet, first of all, do take a backup of those three lectures,
00:01:41because it is very important to see the basic lecture, basic class.
00:01:46The three lectures that have been done, you must see, direction and distance, direction and distance.
00:01:55So first of all, we learned in this chapter that what are the basic directions, that what are the basic directions,
00:02:02east, west, north, south, right? Yes, yes, yes, you can complete your syllabus from VOD, why can't you complete it?
00:02:11As I told you yesterday, there is a student from the previous batch, he completed his syllabus from VOD quickly,
00:02:17because the syllabus was not completed, and that student has achieved three ranks in SSCCCL 2022 exam, Nitin Kumar Aggarwal,
00:02:27and many thousands of students have been selected. So it is not necessary that you complete the syllabus live,
00:02:34okay, yes, let's go, sir. So my friend, my brother, first of all, we learned what are the basic directions,
00:02:43what are our basic directions, then we learned the meaning of right and left, okay, then we asked the question of type 1 category,
00:02:50what do we do in type 1 category, cancel all the right and left, whatever is left is the answer, cancel all the right and left,
00:02:57whatever is left is the answer, cancel all the right and left, whatever is left is the answer, cancel all the right and left,
00:03:04whatever is left is the answer, this was the question of type 1 category, in which the initial direction is given,
00:03:10we are asked the final direction, then we read, son, in type 1 category, we also learned that one single right turn means
00:03:1890 degrees clockwise, one left means 90 degrees anticlockwise, two left, two right turns means opposite,
00:03:24three right turns means one left, three left means one right, four left or four right turns means same direction, okay,
00:03:31after that what did we learn, after that we also learned that how to make the question of type 2,
00:03:40okay, if it is more than 4, then divide it by 4 and get the remainder, then we did type 2, in which the final direction was given,
00:03:48and from the final direction, we asked the initial direction, so what we have to do, cancel all the right and left,
00:03:55if it is going upside down, then whatever position is left, flip it and give the answer, whatever position is left,
00:04:00flip it and give the answer, this was type 2, then we read type 3, in which there were questions of angle,
00:04:05add all clockwise to each other, add all anticlockwise to each other, then subtract their difference, okay,
00:04:11in this, both types of questions are made, from initial to final, from final to initial, in this, both types of questions are made,
00:04:17then we learned type 4, in which with respect to direction and distance will be discussed,
00:04:23with respect to direction and distance, so what I told you that this type 4, we can also do the question without figure,
00:04:30with direct trick, right, but still I told you that the practice of this question, which we have to do with the basic method,
00:04:38the practice of direct trick, we don't have to do much practice of that, we just have to know that,
00:04:43but we have to do the practice of this, okay, we have to do the practice of this basic figure,
00:04:49it is very important to know about Pythagoras theorem, it is very important to know about some triplets,
00:04:55so that we don't have to do calculation in the exam, and without calculation, we can give our answer,
00:05:01so we have read up to this point, we have made all the questions up to question no. 23,
00:05:07okay, yesterday I told you, yes, I explained this basic to you, that sir, the concept of this news,
00:05:14how will it be applied in this basic figure, okay, the figure we made, how will the concept of this news be applied in this figure,
00:05:22if suppose the question is something like this, so there it can help us a lot,
00:05:27it can help us a lot when the direction and distance are asked from the starting point,
00:05:30but we were also making that question figure, so in total, yes, so now we go ahead and go ahead with question no. 23,
00:05:44yes, son, we will do the question of type 4 today, we will do the question of type 4 today,
00:05:51because the questions of type 4 have not been completed yet, okay, yes, type 1 is a little big type,
00:05:57because in the exam, the question related to type 4 will be asked in our exam,
00:06:02the questions of type 1, 2, 3 are asked very rarely, the main questions are made from type 4,
00:06:08you understand, that's why we have to do more practice of type 4,
00:06:13compared to other types, so that's why we will do more questions of it,
00:06:17we have also done a lot of questions of other types, but we will do most of it, type 4,
00:06:24yes, let's go, what is the problem in understanding question no. 23, brother, in understanding question no. 23,
00:06:34what was question no. 23, it was a very easy question,
00:06:37one person goes 5 km east, 5 km south, and then 7 km son, he takes left,
00:06:44so how much more from the starting point, how much more we had to calculate this distance,
00:06:50so we will increase this distance from here, we will bring it in this question,
00:06:54and a watermelon will be made, watermelon a b c, a watermelon will be made,
00:06:58watermelon a b c, this will become a watermelon, this one,
00:07:02you can't put Pythagoras theorem in this watermelon,
00:07:06how much distance is this, 5, how much distance is this, son, distance of 5,
00:07:11so if this is distance of 5, then this will also be distance of 5, it is equal to this,
00:07:16how much distance is from here to here, 7, and how much distance is from here to here, 5,
00:07:21so this is also 5, so what will be the total distance, 7 and 5 is 12,
00:07:26so this is 5, this is 12, so what will be the distance, 5, 12, 13, 5, 12, 13,
00:07:32so this was a very easy question, let's solve question no. 24,
00:07:40how will we know in which question to apply the news trick,
00:07:43oh my brother, my friend, what did I tell you,
00:07:46that you don't have to apply the news trick in any question,
00:07:49you have to solve every question with a very basic method,
00:07:52with a very basic method, every question,
00:07:54but suppose there is a question in which a figure like this is formed,
00:07:59a figure like this is formed, and ask how far is it from the starting point,
00:08:04we have to find this distance, then here also we will have to make a sum over trivial to find this distance,
00:08:10but if I do this question from that, from news,
00:08:14then this question will be solved very easily,
00:08:17because in news we have to make Pythagoras theorem,
00:08:21because there Pythagoras theorem comes on its own,
00:08:24so there we get a little benefit,
00:08:27okay, in this scenario,
00:08:30okay, but when such a big question comes in the exam,
00:08:35then in that question, something else will be asked instead of distance and direction from the starting point,
00:08:40then that news concept will not work there,
00:08:43so what we will do, first we will make a basic figure of type 4,
00:08:47okay, first make a basic figure, then give the answer,
00:08:50and brother, by opening my book from the beginning,
00:08:54or by attending the lecture from VOD from the beginning,
00:08:58there is no use in giving the answer from the beginning,
00:09:00if you have seen this class in VOD before,
00:09:03and you have come here only to give the answer,
00:09:07tell me who can give the answer before writing the question,
00:09:10so do not cheat and give the answer,
00:09:12you will not get anything to learn from it,
00:09:14okay, yes,
00:09:16you mean to say that you just want to take my name,
00:09:20so you have joined the batch just to take the name,
00:09:23so son, it is very wrong,
00:09:24okay, just taking the name will not make the selection,
00:09:27if everyone is selected by taking my name,
00:09:29then I will keep taking everyone's name instead of teaching,
00:09:32so son, study with honesty,
00:09:35with honesty,
00:09:37upload the class as soon as possible,
00:09:44son, upload the class as soon as possible,
00:09:46means it is uploaded immediately,
00:09:48now the live class is going on,
00:09:50as soon as it will end at 3.30-4.30,
00:09:52then you can see the class till 4-4.30,
00:09:55hmm,
00:09:58now you look carefully at the board,
00:10:01this is a good question,
00:10:02this is a good question,
00:10:04one person goes one kilometer north,
00:10:07one person goes one kilometer north,
00:10:10first you should know about the basic directions,
00:10:13those children who have not yet attended my previous three classes,
00:10:19they must attend the last three classes of this chapter,
00:10:23then it will be ultimate fun to see today's class,
00:10:26otherwise today's class may seem a little bad to you,
00:10:32let's go, we know that these are our basic directions,
00:10:35east, west, north, south,
00:10:37whenever we represent directions on paper,
00:10:39this is the way,
00:10:41complete west, north, south,
00:10:44and there are four directions between them,
00:10:46the direction between north and east,
00:10:48northeast, southeast, southwest and northwest,
00:10:51now see what is being said in the question,
00:10:54that one person goes one kilometer north,
00:10:58one person goes one kilometer north,
00:11:01a person walks one kilometer towards north,
00:11:04so child, one kilometer goes north,
00:11:07so drive him one kilometer north,
00:11:09one person goes one kilometer north,
00:11:12a person walks one kilometer towards north,
00:11:15so he started walking from A and that person reached B,
00:11:19he started walking from A and reached B,
00:11:22okay, yes,
00:11:24let's go, next,
00:11:27then he turns to his right at an angle of 45 degrees and walks two kilometers,
00:11:37now child, you have to learn here,
00:11:39here you will get to learn,
00:11:42what will you get here,
00:11:44here we will get to learn something,
00:11:46let's go,
00:11:53yes,
00:11:54so the first person went one kilometer north,
00:11:57right,
00:11:58after that he turns right and walks two kilometers,
00:12:01now look carefully and try to understand carefully,
00:12:04here he takes a right turn,
00:12:06if I tell you that you have to take a normal right turn,
00:12:09you have to turn right normally,
00:12:11there is no such condition,
00:12:13so our normal right turn will be this,
00:12:16this will be our normal right turn,
00:12:18this is a normal right turn,
00:12:20but there are many such students among you,
00:12:22who have reached right turn from A to B,
00:12:25so they have reached B and taken a right turn like this,
00:12:28there are some of you who have taken a right turn like this,
00:12:32means there are three types of students,
00:12:34one is these children,
00:12:35one is this,
00:12:36one is this,
00:12:37now we have to learn,
00:12:38brother, don't do this comment 100 times,
00:12:40you irritate me completely,
00:12:42I have been noticing you for the last 3-4 days,
00:12:44you are the only child in the whole batch,
00:12:46who paste the same comment 500 times,
00:12:48copy paste, copy paste, copy paste,
00:12:50brother, we read your comments,
00:12:52if you are not replying,
00:12:53then there is no weightage of your comments,
00:12:57that's why I didn't reply,
00:12:58if you are wasting time for no reason,
00:13:02you have come to read, read,
00:13:07yes,
00:13:08so my friend, my brother,
00:13:09this is our normal right turn,
00:13:11now we have to see,
00:13:12sir, what kind of turn is this,
00:13:14tell me one thing,
00:13:15I taught you in the first class,
00:13:17what does 45 degrees right mean,
00:13:20sir, what does 45 degrees right mean,
00:13:23it is clockwise,
00:13:24in the first class I taught you,
00:13:26that right means clockwise,
00:13:28what does right mean,
00:13:30right means clockwise,
00:13:32so you have to take a 45 degree clockwise turn,
00:13:35son, your face is in the north,
00:13:37and if you have to turn 45 degrees clockwise from the north,
00:13:41if you want to turn 45 degrees clockwise from the north,
00:13:44then where will your face reach,
00:13:46sir, if I turn the north 45 degrees clockwise,
00:13:49then my face will reach the northeast,
00:13:51it means that when we take 45 degrees clockwise from the north,
00:13:55then our face will reach the northeast,
00:13:58not the face will reach the southeast,
00:14:01nor will the face reach the east,
00:14:03because this is the normal right turn,
00:14:06and do you know how many degrees is the right turn,
00:14:08if your face is in the north,
00:14:10and you are going straight in this direction,
00:14:12in the southeast,
00:14:13so do you know how many degrees you have turned,
00:14:15you have turned 135 degrees right turn,
00:14:17so basically this is our 135 degree right turn,
00:14:20so the 45 degree right turn is this,
00:14:2345 degree right turn,
00:14:25sir, where is the 45 degree angle coming from,
00:14:27see this is the 45 degree angle,
00:14:30this is the 45 degree angle,
00:14:32so this was the way to go,
00:14:35so from this way,
00:14:36he turned 45 degrees south,
00:14:39this is the way,
00:14:40he turned 45 degrees clockwise from this way,
00:14:43when did he turn,
00:14:44when he walked 1 km,
00:14:46reached from A to B,
00:14:48when he reached from A to B,
00:14:50after walking 1 km,
00:14:51then he turned 45 degrees clockwise from his way,
00:14:55he takes a 45 degree clockwise turn,
00:14:58so the actual figure will be this,
00:15:01not this,
00:15:02not this,
00:15:03these two figures will not be made,
00:15:05okay,
00:15:06yes,
00:15:07so now we try to make this figure,
00:15:11so what is the question,
00:15:12that one person went 1 km to the north,
00:15:16he reached from point A to point B,
00:15:18and after reaching here,
00:15:19he takes a 45 degree clockwise turn,
00:15:21reaches point C,
00:15:22and walks 2 km,
00:15:24and walks 2 km,
00:15:27and in the end,
00:15:28he turns right and walks 2 km,
00:15:30and finally,
00:15:31he turns to his right and walks 2 km,
00:15:34in the end,
00:15:35he takes a right turn,
00:15:36here he takes a right turn,
00:15:38okay,
00:15:39tell me,
00:15:40how will he take a right turn here,
00:15:41if your face is in the north east,
00:15:43and you want to take a right turn from here,
00:15:45so right means 90 degrees clockwise,
00:15:48normal light means 90 degrees clockwise,
00:15:51so what will be the right of the north east,
00:15:53the right of the north east will be south east,
00:15:55it means now he will go in the south east direction,
00:15:58and how far does he walk,
00:16:00and he walks 2 km,
00:16:02and he walks 2 km,
00:16:04means this distance is also 2 km,
00:16:06it means,
00:16:07he reached point D,
00:16:10and point B and D are in a straight line,
00:16:15point B and D are in a straight line,
00:16:18now what is being asked to us,
00:16:19now how far is he from the starting point,
00:16:23so brother,
00:16:24you will calculate distance from the starting point,
00:16:26and you will calculate direction from the starting point,
00:16:29what is the starting point A,
00:16:30what is the last point D,
00:16:32so calculate the distance and direction from A to D,
00:16:36so which direction is this,
00:16:38this direction is up,
00:16:40means north,
00:16:41this direction is on the right hand side,
00:16:43means east,
00:16:44so he is from the starting point,
00:16:46into the north east direction,
00:16:51but how much is the distance,
00:16:53to calculate this distance, calculate this distance, calculate this distance, calculate
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00:43:17So, this distance is 15, so this is also 15 because it is 15 root 2, so subtract 3 from
00:43:3715.
00:43:38This distance is 6, this distance is 6 root 2, this distance is 6 root 2 and this distance
00:43:55is 8.
00:43:57Now tell me how much more is in front of the starting point?
00:44:00Now tell me how much more is in front of the starting point?
00:44:03Tell me quickly, son, tell me this direction and distance.
00:44:08Tell me this direction and distance quickly.
00:44:12Tell me this direction and distance.
00:44:15What is this direction and what is this distance?
00:44:18Tell me quickly.
00:44:19Direction and distance.
00:44:23Yes, tell me this direction and distance quickly.
00:44:28Come on.
00:44:31Will the whole reasoning be covered by VOD?
00:44:33Definitely, 100%.
00:44:37Tell me quickly, sir, we don't have that much time.
00:44:43Yes.
00:44:46Do you know how far this is?
00:44:51Now calculate a little while ago.
00:44:53If this distance is 6, then this distance is also 6.
00:44:56If this is 6, then this is also 6, so this is 6 and this is 8.
00:45:00So, this is 6 and this is 8.
00:45:02So, this distance will not be 10 and the arrow is going down and going to the left.
00:45:07So, 10 South West.
00:45:0910 South West.
00:45:12This is 6, this is 6 root 2, so this will also be 6 and this is 8.
00:45:17So, son, this is 8 and this is 6.
00:45:19So, how far is it from the starting point?
00:45:216, 8, 10 Pythagoras theorem.
00:45:23And what will be the direction?
00:45:25Direction will be South West.
00:45:27Direction will be South West.
00:45:30Do you understand?
00:45:31Direction will be South West.
00:45:49Let's make it.
00:45:58You make the figure of this question quickly.
00:46:01Quickly.
00:46:02A basic figure will be made, make it quickly.
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00:52:08This is our straight line and what is the distance between it? 7 and 5 is equal to 12
00:52:15Question is what is the distance between point P and U?
00:52:19Point P and U is equal to 12
00:52:24In which direction is S from P?
00:52:27Dear, which direction is S from P?
00:52:29Point S is in which direction from P?
00:52:33If you ask direction from P, then direct arrow from P to S
00:52:37Where is this arrow going?
00:52:39Sir, this arrow is going down
00:52:41What is down? South
00:52:43What is down? South
00:52:45This arrow is going right
00:52:46What is right? South-East
00:52:48Point S is in which direction from P?
00:52:50South-East
00:52:51South-East
00:52:56So we made a basic figure and gave the answer
00:52:59Now this question
00:53:01Right? Yes
00:53:05If we would have done this question with short trick, then we would have made this question with short trick
00:53:13But we would not have made this question
00:53:15We would not have made this one with short trick
00:53:17We would have made this
00:53:18That's why we said that it is important to understand basic method
00:53:22Come on, make this question
00:53:26Make this figure quickly
00:53:33You have to make 3 question figure of 27, 28, 29
00:53:36Make figure of 27, 28, 29 quickly
00:53:44Because we will start next type from tomorrow
00:53:48We have to finish type 4 today
00:53:51We have to finish type 4 today
00:53:54Come on, I will repeat the figure quickly
00:53:58First of all, it goes from point P to South, 15
00:54:03Then it takes left turn and goes to point R
00:54:09Then it takes left again and goes to point S
00:54:13Then it takes two turns at point S
00:54:16So, its final turn will be 270-180 clockwise
00:54:21270-180 90 degrees clockwise
00:54:23So, it will turn 90 degrees clockwise
00:54:26Then it takes left again, 90 degrees anticlockwise
00:54:31So, it will go to point U
00:54:33This was the figure
00:54:39It turned 90 degrees clockwise at point S
00:54:42It turned 2-3 degrees at point S
00:54:44So, the angle which turned 2-3 times at point S
00:54:47In all these, connect all clockwise and anticlockwise
00:54:52Finally, find out the difference of both
00:54:54So, I told you yesterday
00:54:56Finally, find out the difference of both at point S
00:54:59Make figure of this question quickly
00:55:05It goes from point P to East
00:55:09It goes from point P to East
00:55:12It goes 10 meters and reaches point Q
00:55:14Consider this is point P
00:55:23It goes from point P to East
00:55:29It goes 10 meters and reaches point Q
00:55:31Amit started from point P
00:55:33He moves 10 meters East direction
00:55:35And reaches point Q
00:55:37It went from P to East direction
00:55:40And reached point Q
00:55:43It reached point Q
00:55:45How far it reached?
00:55:47It reached 10 meters
00:55:49It turns right
00:55:51It goes 7 meters and reaches point R
00:55:53It takes right turn
00:55:55It goes 7 meters
00:55:57Where is right turn?
00:55:59Right turn is down
00:56:01It goes 7 meters
00:56:03It reaches point R
00:56:05It goes 7 meters
00:56:07It reaches point R
00:56:09It turns left
00:56:11It goes 15 meters
00:56:13It reaches point S
00:56:15Now he turns to left
00:56:17And moves 15 meters
00:56:19To reach his point S
00:56:21If face South
00:56:23Where is left turn?
00:56:25Towards East
00:56:27How far it goes?
00:56:29To reach point S
00:56:31To reach point S
00:56:33It goes
00:56:3515 meters
00:56:37Now what will happen?
00:56:40It turns South-West
00:56:42What is South-West direction?
00:56:44South is down
00:56:46West is left
00:56:48It goes in this direction
00:56:50It goes 17 meters
00:56:52And reaches point T
00:56:54It goes in this direction
00:56:56It goes 17 meters
00:56:58It goes 17 meters
00:57:00And reaches point T
00:57:02It goes 17 meters
00:57:04And reaches point T
00:57:06It goes 17 meters
00:57:09We should have this knowledge
00:57:11about Pythagoras Triplet
00:57:13Ask me why?
00:57:15Why are you taking line straightly
00:57:17from point S?
00:57:19Why are you taking straight line
00:57:21from Point S to Q?
00:57:23Meaning
00:57:25S and Q are different
00:57:27From point S to Q
00:57:29Why are you taking
00:57:31straight line from S
00:57:33Solder 2 turns on point S
00:57:35180 Degree anti clockwise
00:57:37before any movement it turned twice
00:57:39so finally the one who will turn
00:57:41will be the difference of these two
00:57:43the difference of these two is 90 degree clockwise
00:57:45so if at point S 90 degree clockwise
00:57:47is home, face is in north
00:57:49so north's 90 degree clockwise
00:57:51will come in east, that's why it went here
00:57:53ok
00:57:55after reaching point S it turned 90 degree
00:57:57clockwise
00:57:59we were told it turned twice, basically
00:58:01both times means 90 degree clockwise
00:58:03both times means
00:58:05both times means 90 degree clockwise
00:58:07ok
00:58:09now the thing is
00:58:11we should know about triplet
00:58:13do you know why?
00:58:15because when we heard the name of 15-17
00:58:17when we heard the name of 15-17
00:58:19so here triplet is made
00:58:21according to Pythagoras theorem
00:58:238-15-17
00:58:25who is this 90 degree?
00:58:27ok, the one in front of it
00:58:29became hypotenuse
00:58:31this is not 45 degree
00:58:33because it said
00:58:35to go in south west
00:58:37but how much to go and at what angle
00:58:39this is not given
00:58:41so this is not 45 degree
00:58:43so it reached point T
00:58:45now what happened?
00:58:47from point T it turns in west
00:58:49and goes 10 meters
00:58:51ok, at point T it's face
00:58:53wherever it is, it doesn't matter
00:58:55it turns in west direction
00:58:57west means always left
00:58:59west means always
00:59:01always left
00:59:03and how much it went? 10 meters
00:59:05and distance of 10 meters is above
00:59:07this means
00:59:09this will be a straight line
00:59:11this will be a straight line
00:59:13this will be a straight line
00:59:15right?
00:59:17and this is 8 and this is 7
00:59:19so this distance will be 15
00:59:21now let's see
00:59:23what is asked in the question
00:59:25we are asked to tell the minimum distance
00:59:27between point Q and T
00:59:29distance between Q and T
00:59:31distance between Q and T is 8 and 7
00:59:338 and 7 is 15
00:59:35in which direction is point P
00:59:37with respect to U
00:59:39son, P is in which direction
00:59:41with respect to U
00:59:43where is U?
00:59:45so from where is the direction asked?
00:59:47direction is asked from U
00:59:49so you will shoot an arrow from U and aim at P
00:59:51from where is the direction asked?
00:59:53direction is asked from U
00:59:55so you will shoot an arrow from U towards P
00:59:57so son, where will the arrow fly?
00:59:59so the point P is from U
01:00:01in the north direction
01:00:03point P is in the direction of U
01:00:05in which direction is point P
01:00:07with respect to
01:00:09hmm
01:00:11north
01:00:13south answer will not come
01:00:15north answer will come
01:00:17ok
01:00:19let's go
01:00:21next question
01:00:23make a figure
01:00:25make a figure
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