The Mathalist
The Mathalist
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A boy whose eye level is 1.35 m from the ground, spots a balloon moving with the wind in a horizonta
A boy whose eye level is 1.35 m from the ground, spots a balloon moving with the wind in a horizontal line at some height from the ground. The angle of elevation of the balloon from the eyes of the boy at an instant is 60°. After 12 seconds, the angle of elevation reduces to 30°. If the speed of the wind is 3m/s then find the height of the balloon from the ground. (Use √3 = 1.73)
Assignment || Q15
Application of Trigonometry(Height and Distances)
Very Very Important Questions
📚 Very Important Class Alert!
In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances.
Learn how trigonometry helps in:
✅ Measuring the heights of buildings, mountains, and towers
✅ Calculating distances from a specific point
✅ Understanding Angle of Elevation and Angle of Depression
We’ll explore theoretical concepts and real-life applications to show you how trigonometry is used in fields like architecture, engineering, and navigation.
🎯 Perfect for Class 10 students preparing for board exams!
Stay tuned till the end for tips, tricks, and solved examples to make this topic easy to understand and score full marks in exams.
#ncertsolutions #cbseboardexam2025 #applicationoftrigonometry #heightsanddistances#maths #shorcuts
มุมมอง: 11

วีดีโอ

A boy standing on the ground finds a bird flying at a distance of 100m from him at an elevation of
มุมมอง 14 ชั่วโมงที่ผ่านมา
A boy standing on the ground finds a bird flying at a distance of 100m from him at an elevation of 30. A girl standing on the roof of 20 m high building finds the angle of elevation of the same bird to be 45. The boy and the girl are on opposite sides of the bird. Find the distance of the bird from the girl. Assignment || Q14 Application of Trigonometry(Height and Distances) Very Very Important...
A man rowing a boat away from a light house 150 m high, takes 2 minutes to change the angle of eleva
มุมมอง 44 ชั่วโมงที่ผ่านมา
A man rowing a boat away from a light house 150 m high, takes 2 minutes to change the angle of elevation of the top of the light house from 45º to 30º. Find the speed of the boat. Assignment || Q13 Application of Trigonometry(Height and Distances) Very Very Important Questions 📚 Very Important Class Alert! In this video, we dive into one of the most practical applications of trigonometry: Heigh...
From the top of a light house, the angles of depression of two ships on the opposite sides of the li
มุมมอง 74 ชั่วโมงที่ผ่านมา
From the top of a light house, the angles of depression of two ships on the opposite sides of the light house are observed to be α and β. If the height of the light house be h metres and if the line joining the ships passes through the foot of the light house. Show that distance between the ships is h (tan α tan β )/(tan α tan β) m. Assignment || Q12 Application of Trigonometry(Height and Dista...
An aeroplane flying horizontally at a height of 1.5 km above the ground is observed at a certain poi
มุมมอง 34 ชั่วโมงที่ผ่านมา
An aeroplane flying horizontally at a height of 1.5 km above the ground is observed at a certain point on earth to subtend an angle of 60º. After 15 seconds, its angle of elevation is observed to be 30º. Calculate the speed of the aeroplane in km/h. Assignment || Q11 Application of Trigonometry(Height and Distances) Very Very Important Questions 📚 Very Important Class Alert! In this video, we d...
The angle of elevation of a cloud from a point h metres above a lake is beta and the angle of depres
มุมมอง 74 ชั่วโมงที่ผ่านมา
The angle of elevation of a cloud from a point h metres above a lake is β and the angle of depression of its reflection in the lake is α. Prove that the height of the cloud above the lake is h (tan α tan β)/(tan α - tan β) metres. Assignment || Q10 Application of Trigonometry(Height and Distances) Very Very Important Questions 📚 Very Important Class Alert! In this video, we dive into one of the...
The length of the shadow of a vertical pole is 1/√3 times its height. Find the angle of elevation .
มุมมอง 87 ชั่วโมงที่ผ่านมา
The length of the shadow of a vertical pole is 1/√3 times its height. Find the angle of elevation . Assignment || Q9 Very Very Important Questions 📚 Very Important Class Alert! In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances. Learn how trigonometry helps in: ✅ Measuring the heights of buildings, mountains, and towers ✅ Calculating distan...
A parachutist is descending vertically. At a certain height his angle of elevation from a point on t
มุมมอง 512 ชั่วโมงที่ผ่านมา
A parachutist is descending vertically. At a certain height his angle of elevation from a point on the ground is 60º and when he has descended 300 m further, the angle of elevation becomes 45º from the same point of observation. Find the distance of the point of observation from the place where the parachutist lands. Assignment: Q8 Very Very Important Questions 📚 Very Important Class Alert! In ...
The angle of elevation of a cloud from a point 200 m above the lake is 30º and the angle of depressi
มุมมอง 512 ชั่วโมงที่ผ่านมา
Q7. The angle of elevation of a cloud from a point 200 m above the lake is 30º and the angle of depression of its reflection in the lake is 60º. Find the height of the cloud above the lake. Assignment: Q7 Very Very Important Questions 📚 Very Important Question Alert! In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances. Learn how trigonometry...
From the top of a hill, the angles of depression of two consecutive kilometre stones due east are fo
มุมมอง 212 ชั่วโมงที่ผ่านมา
Q6. From the top of a hill, the angles of depression of two consecutive kilometer stones due east are found to be 30° and 45°. Find the height of the hill. Assignment Q6 Very Very Important Questions 📚 Very Important Class Alert! In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances. Learn how trigonometry helps in: ✅ Measuring the heights of ...
The shadow of a tower standing on a level ground is found to be 40 m longer when the Suns altitude i
มุมมอง 612 ชั่วโมงที่ผ่านมา
Q5. The shadow of a tower standing on a level ground is found to be 40 m longer when the Sun's altitude is 30o than when it is 60o. Find the height of the tower. Assignment Q5 Very Very Important Question 📚 Very Important Class Alert! In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances. Learn how trigonometry helps in: ✅ Measuring the height...
From an aeroplane vertically above a straight horizontal road, the angles of depression of two conse
มุมมอง 212 ชั่วโมงที่ผ่านมา
From an aeroplane vertically above a straight horizontal road, the angles of depression of two consecutive mile stones on opposite sides of the aeroplane are observed to be α and β. Show that the height in miles of aeroplane above the road is given by (tanα.tanβ)/(tanβ tanα.) Assignment Q4 Most Important Questions 📚 Very Important Class Alert! In this video, we dive into one of the most practic...
An aeroplane when flying at a height of 3000 m from the ground passes vertically above another aero
มุมมอง 612 ชั่วโมงที่ผ่านมา
Q3. An aeroplane when flying at a height of 3000 m from the ground passes vertically above another aeroplane at an instant when the angles of elevation of the two planes from the same point on the ground are 60° and 45° respectively. Find first aeroplane is how much high with second aeroplane. Assignment Q3 📚 Very Important Class Alert! In this video, we dive into one of the most practical appl...
The length of a string between a kite and a point on the ground is 90 meters. If the string makes an
มุมมอง 612 ชั่วโมงที่ผ่านมา
Q2. The length of a string between a kite and a point on the ground is 90 meters. If the string makes an angles θ with the ground level such that tanθ=15/8, how high is the kite? Assume that there is no slack in the string. Assignment Q2 📚 Very Important Class Alert! In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances. Learn how trigonometry...
Two boats approached a lighthouse in the mid sea from opposite directions the angle of elevation of
มุมมอง 612 ชั่วโมงที่ผ่านมา
Two boats approached a lighthouse in the mid sea from opposite directions the angle of elevation of the top of the lighthouse are 30 and 45 degree respectively if the distance between two boats is 100m find the highest of the lighthouse. Assignment Q1 📚 Very Important Class Alert! In this video, we dive into one of the most practical applications of trigonometry: Heights and Distances. Learn ho...
A kite is flying at a height of 60 m above the ground. The string attached to the kite is temporaril
มุมมอง 1114 ชั่วโมงที่ผ่านมา
A kite is flying at a height of 60 m above the ground. The string attached to the kite is temporaril
A 1.2 m tall girl spots a balloon moving with the wind in a horizontal line at a height of 88.2 m fr
มุมมอง 1214 ชั่วโมงที่ผ่านมา
A 1.2 m tall girl spots a balloon moving with the wind in a horizontal line at a height of 88.2 m fr
The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m from the
มุมมอง 1214 ชั่วโมงที่ผ่านมา
The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m from the
A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a c
มุมมอง 814 ชั่วโมงที่ผ่านมา
A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a c
As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of t
มุมมอง 614 ชั่วโมงที่ผ่านมา
As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of t
From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60° and t
มุมมอง 514 ชั่วโมงที่ผ่านมา
From the top of a 7 m high building, the angle of elevation of the top of a cable tower is 60° and t
A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite
มุมมอง 514 ชั่วโมงที่ผ่านมา
A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite
Two poles of equal heights are standing opposite each other on either side of the road, which is 80
มุมมอง 1414 ชั่วโมงที่ผ่านมา
Two poles of equal heights are standing opposite each other on either side of the road, which is 80
The angle of elevation of the top of a building from the foot of the tower is 30° and the angle of e
มุมมอง 614 ชั่วโมงที่ผ่านมา
The angle of elevation of the top of a building from the foot of the tower is 30° and the angle of e
A statue, 1.6 m tall, stands on the top of a pedestal. From a point on the ground, the angle of elev
มุมมอง 1014 ชั่วโมงที่ผ่านมา
A statue, 1.6 m tall, stands on the top of a pedestal. From a point on the ground, the angle of elev
From a point on the ground, the angles of elevation of the bottom and the top of a transmission towe
มุมมอง 414 ชั่วโมงที่ผ่านมา
From a point on the ground, the angles of elevation of the bottom and the top of a transmission towe
The angle of elevation of the top of a tower from a point on the ground, which is 30 m away from the
มุมมอง 1714 ชั่วโมงที่ผ่านมา
The angle of elevation of the top of a tower from a point on the ground, which is 30 m away from the
A contractor plans to install two slides for the children to play in a park. For the children below
มุมมอง 3216 ชั่วโมงที่ผ่านมา
A contractor plans to install two slides for the children to play in a park. For the children below
A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground
มุมมอง 2416 ชั่วโมงที่ผ่านมา
A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground
Class 10 Mathematics || Chapter 9 Application of Trigonometry II Lecture-2 II Q1, Exercise:9.1
มุมมอง 3416 ชั่วโมงที่ผ่านมา
Class 10 Mathematics || Chapter 9 Application of Trigonometry II Lecture-2 II Q1, Exercise:9.1

ความคิดเห็น

  • @BALL_ON_FOOT
    @BALL_ON_FOOT ชั่วโมงที่ผ่านมา

    Thankyou sir for the explanation

    • @themathalist
      @themathalist 53 นาทีที่ผ่านมา

      @@BALL_ON_FOOT thank you for your appreciation

  • @Salik_dps
    @Salik_dps 3 วันที่ผ่านมา

    Sir literally every hardest question I did in RD Sharma, Exemplar you have uploaded solutions for them and i never saw explanation in such detail for these questions. Hats off to you sir. Lots of Love❤❤❤

    • @themathalist
      @themathalist 3 วันที่ผ่านมา

      @Salik_dps always trying for the best in my institute

  • @EkamjeetSidhu-e7k
    @EkamjeetSidhu-e7k 3 วันที่ผ่านมา

    Sir how would u do x*2x6*3=5/6-12+3×5+6*8=?

  • @harmansidhu6085
    @harmansidhu6085 3 วันที่ผ่านมา

    Very handsome man

  • @AlokikdeepSingh
    @AlokikdeepSingh 5 วันที่ผ่านมา

    Very nice sir Very very very nice Sab smj mei aagya Seriously

    • @themathalist
      @themathalist 3 วันที่ผ่านมา

      thank you for the feedback. keep learning

  • @Vidhushi_69
    @Vidhushi_69 8 วันที่ผ่านมา

  • @gooleaccount3533
    @gooleaccount3533 8 วันที่ผ่านมา

    👍 nice explanation

    • @themathalist
      @themathalist 8 วันที่ผ่านมา

      @@gooleaccount3533 thank you for your appreciation🙏

  • @ramanshkhera7193
    @ramanshkhera7193 10 วันที่ผ่านมา

    It was very helpful sirr🙏

    • @themathalist
      @themathalist 9 วันที่ผ่านมา

      @@ramanshkhera7193 your comments always motivate me. Thank you

  • @Sujit-iiscbanglore2027
    @Sujit-iiscbanglore2027 19 วันที่ผ่านมา

    Sir yeha peh calculation wrong hai 1:09:00 distance 6.6 km hogi naki 3.3km kyuki ap us 2 ko multiply karna bhul gye honge ❤

    • @themathalist
      @themathalist 9 วันที่ผ่านมา

      Thank you for the update..

    • @Sujit-iiscbanglore2027
      @Sujit-iiscbanglore2027 9 วันที่ผ่านมา

      @themathalist which chapter are you planning to upload next ?

    • @themathalist
      @themathalist 9 วันที่ผ่านมา

      @@Sujit-iiscbanglore2027 heights and Distances

  • @Sujit-iiscbanglore2027
    @Sujit-iiscbanglore2027 23 วันที่ผ่านมา

    Thank you sir 👍

    • @themathalist
      @themathalist 4 วันที่ผ่านมา

      You're welcome, keep practicing!

  • @Sujit-iiscbanglore2027
    @Sujit-iiscbanglore2027 23 วันที่ผ่านมา

    Love this lecture this ❤

    • @themathalist
      @themathalist 4 วันที่ผ่านมา

      I’m glad you found it helpful! 😊

  • @Sujit-iiscbanglore2027
    @Sujit-iiscbanglore2027 23 วันที่ผ่านมา

    Can we use the symbol of circle instead of writing circle

    • @themathalist
      @themathalist 23 วันที่ผ่านมา

      @@Sujit-iiscbanglore2027 of course you can use, make a small circle and put a dot in it as I write

  • @RohitSharma-tk6ht
    @RohitSharma-tk6ht 23 วันที่ผ่านมา

    Sir you are always preparing videos for us and also put your lot of effort and time in creating and helping the students. Sir you are not getting many views or subscribers but you have a dedication for providing a free educational source for the student and I appreciate and salute your efforts 🙏 🙏 🙏 👍 😊😊❤❤

    • @themathalist
      @themathalist 23 วันที่ผ่านมา

      Hi Rohit, Thank you so much for appreciating my TH-cam video. It means a lot to me when students find value in my content. While it's true that my channel currently has fewer subscribers, I firmly believe that when you focus on doing good deeds, results will naturally follow in time. For me, success isn't about numbers-if even one of my lectures contributes positively to someone's academic journey, that alone makes me feel deeply fulfilled. I’m committed to growing and improving my content for students like you. Thanks again for your kind words and support! Best regards, Munish Gupta

  • @RohitSharma-tk6ht
    @RohitSharma-tk6ht 23 วันที่ผ่านมา

    Thank you sir this was very helpful for me ❤❤

    • @themathalist
      @themathalist 4 วันที่ผ่านมา

      I am thankful to you for your reply.

  • @SURYANARAYANHOTA
    @SURYANARAYANHOTA หลายเดือนก่อน

    ❤ bahut acha explanation sir 🎉🎉🎉

    • @themathalist
      @themathalist หลายเดือนก่อน

      @@SURYANARAYANHOTA I always tried to publish the content irrespective of the world of likes and views..God bless you..stay connected..happy learning

  • @dcttournaments5262
    @dcttournaments5262 หลายเดือนก่อน

    newtons formula

  • @kantopa3913
    @kantopa3913 หลายเดือนก่อน

    Keep growing sir

  • @kantopa3913
    @kantopa3913 หลายเดือนก่อน

  • @Nishant-zc5vg
    @Nishant-zc5vg หลายเดือนก่อน

    Sir background thoda jyda dark

    • @themathalist
      @themathalist หลายเดือนก่อน

      @@Nishant-zc5vg Hi Nishant I hope the content is useful to you, I will try to improve for aesthetics..thank you

  • @yashikakashyap8615
    @yashikakashyap8615 หลายเดือนก่อน

    Sir you stopped the jee series 😢

    • @themathalist
      @themathalist หลายเดือนก่อน

      @@yashikakashyap8615 Hi dear I would definitely start those in the upcoming videos...

  • @sanjibsaikia9618
    @sanjibsaikia9618 3 หลายเดือนก่อน

    Great sir

  • @Kriyanshi-k2u
    @Kriyanshi-k2u 3 หลายเดือนก่อน

    Sir u were soo gud... I can't believe that ur not well known .....why ur channel is so underrated...i wish u have the growth u deserve..

    • @themathalist
      @themathalist 2 หลายเดือนก่อน

      I am so grateful your kind words, give me one year and see what happens... God bless you and wish you all the best.

    • @Kriyanshi-k2u
      @Kriyanshi-k2u 2 หลายเดือนก่อน

      @@themathalist 😊....All the best sir...👍🏻

  • @AmitKumar-yv1tz
    @AmitKumar-yv1tz 4 หลายเดือนก่อน

    Thank you, sir

  • @yashikakashyap8615
    @yashikakashyap8615 5 หลายเดือนก่อน

    sir do u also teach physics?

    • @themathalist
      @themathalist 4 หลายเดือนก่อน

      I am really sorry

  • @yashikakashyap8615
    @yashikakashyap8615 5 หลายเดือนก่อน

    thank you sir

  • @Mohdayan-vw3hv
    @Mohdayan-vw3hv 5 หลายเดือนก่อน

    Good explanation

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      Thank you for your feedback. Will be coming with more useful contents.

  • @vijaykumarpandey2373
    @vijaykumarpandey2373 5 หลายเดือนก่อน

    Sir mazaa aa gaya❤❤

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      @@vijaykumarpandey2373 I am thankful to you for your reply. Abhi roz roz maza aayega..

  • @yashikakashyap8615
    @yashikakashyap8615 5 หลายเดือนก่อน

    Thank you sir , please continue this series

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      @@yashikakashyap8615 I appreciate your feedback. Thank you

  • @EpicFail7579
    @EpicFail7579 5 หลายเดือนก่อน

    Thank you so much sirr

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      All the best

  • @yasminshaikh7887
    @yasminshaikh7887 5 หลายเดือนก่อน

    You are a 🌸 blessing for us sir 😊 Thank you

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      So nice of you

  • @ffkinggaming5772
    @ffkinggaming5772 5 หลายเดือนก่อน

    Messi

  • @Careerinresearch2001
    @Careerinresearch2001 6 หลายเดือนก่อน

    Maza aa gya sir

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      I will make more videos

  • @gauravsivach2742
    @gauravsivach2742 7 หลายเดือนก่อน

    Sir maza aa gaya 😊

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      I will make more videos

  • @shubhamdixit6359
    @shubhamdixit6359 8 หลายเดือนก่อน

    Excellent

  • @Snapchat-07
    @Snapchat-07 8 หลายเดือนก่อน

    Thankyou Sir for this explanation

    • @themathalist
      @themathalist 5 หลายเดือนก่อน

      Most welcome

  • @ChhaviChaudhary-ws4cu
    @ChhaviChaudhary-ws4cu 8 หลายเดือนก่อน

    nice explaination!!!

    • @themathalist
      @themathalist 8 หลายเดือนก่อน

      Glad you liked it!

  • @yashikakashyap8615
    @yashikakashyap8615 8 หลายเดือนก่อน

    Sir, you deserve millions of subscribers! Most of the teachers don't explain the logic, and if we ask them the reason behind it, they do not explain properly. But you are truly an exception. Thank you so much!

    • @themathalist
      @themathalist 8 หลายเดือนก่อน

      Thank you for your wonderful words

    • @RAHULKumar-ch1fm
      @RAHULKumar-ch1fm 7 หลายเดือนก่อน

      Bilkul sahi kaha aapne...nobody tell the reason

  • @brijmohan7096
    @brijmohan7096 9 หลายเดือนก่อน

    Kaash Mai 3 4 baar aapka channel subscribe Kar Pata.... 😮😮😊

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      Dear Student, I am grateful to you for your comments. I left this channel for some personal reasons, but your comments made me motivated to start it again. You would find new content soon.

  • @sapnashrivastav4577
    @sapnashrivastav4577 11 หลายเดือนก่อน

    Sir, PW aur doubtnut vale bhi itna ache se nhi smjha pay..jitna ache se aapne smjhaya...thanks a lot in making us understand the crux and reasoning of amswer

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      Perfect comments for perfect lesson learnt....thank you

  • @haiqoooscosmos2012
    @haiqoooscosmos2012 ปีที่แล้ว

    🎉thanks real genius

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      Thankful to you for your comments...

  • @sakshipawar3798
    @sakshipawar3798 ปีที่แล้ว

    thank you so much sir. because of you now i understand he concept otherwise all other teachers just give some rattaful tips for this type of questions .... now these questions do not scare me

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      Thanks for your comments

  • @Hardikjain692
    @Hardikjain692 ปีที่แล้ว

    Superb explanation If our teachers would become like u, our India would be the most developed country in the world

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      That is height of appreciation....thank you

    • @Hardikjain692
      @Hardikjain692 8 หลายเดือนก่อน

      My pleasure sir

  • @AnkitaSingh-mv2ol
    @AnkitaSingh-mv2ol ปีที่แล้ว

    Can you make more videos on rd sharma exercise

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      "Thank you so much for your kind words! I'm thrilled to hear that you're finding the content helpful and enjoyable. Keep up the great work in your studies!"

  • @anilkumarsingh9413
    @anilkumarsingh9413 ปีที่แล้ว

    Don't judge a teacher by his subscriber😊

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      "I appreciate your positive feedback! It's wonderful to know that the videos are making a difference for you. If you have any questions or topics you'd like me to cover in future videos, feel free to let me know!"

  • @anilkumarsingh9413
    @anilkumarsingh9413 ปีที่แล้ว

    O sir🎉

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      We are a team and we will go forward...

  • @helperboy1065
    @helperboy1065 ปีที่แล้ว

    I Don't believed perfection exist until I saw this

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      "Your comments truly made my day! I'm glad to hear that you're finding value in the content. Remember, if you ever need extra clarification or assistance with any mathematical concepts, I'm here to help."

  • @flutebyparmanand
    @flutebyparmanand ปีที่แล้ว

    Sir aap plz class 10 ka full. Course daal dijiye

    • @themathalist
      @themathalist 9 หลายเดือนก่อน

      I would try for future content..

    • @flutebyparmanand
      @flutebyparmanand 8 หลายเดือนก่อน

      @themathalist7287 nhi sir rehne dijiye m ab 11 m aa gya😂😂

  • @Padhai_sirf_padhai
    @Padhai_sirf_padhai ปีที่แล้ว

    Sir please upload the Rd Sharma questions please sir