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Friday, 9 October

JEE Main 2022 · MathsMultiple choiceSingle correctMediumMulti-step

JEE Main 25 July 2022, Shift 1, Maths Q19

Question 19 of 90 in this shift, Maths question 19 of 30, Section A.

A tower PQPQ stands on a horizontal ground with base QQ on the ground. The point RR divides the tower in two parts such that QR=15QR=15 m. If from a point AA on the ground the angle of elevation of RR is 60∘60^\circ and the part PRPR of the tower subtends an angle of 15∘15^\circ at AA, then the height of the tower is :
  1. (1)5(23+3)5(2\sqrt3+3) mOfficial answer
  2. (2)5(3+3)5(\sqrt3+3) m
  3. (3)10(3+1)10(\sqrt3+1) m
  4. (4)10(23+1)10(2\sqrt3+1) m

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter
Trigonometric Functions
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.