JEE Main 2022 (27 Jul, Shift 1) Maths Q15: Let a vertical…

Question

Let a vertical tower

AB

of height

2h

stands on a horizontal ground. Let from a point

P

on the ground a man can see upto height

h

of the tower with an angle of elevation

2\alpha

. When from

P

, he moves a distance

d

in the direction of

\overrightarrow{AP}

, he can see the top

B

of the tower with an angle of elevation

\alpha

. If

d = \sqrt{7}\,h

, then

\tan\alpha

is equal to

Official answer

Option 3

NTA final key.

Accepted Answer

Option 3: $\sqrt{7} - 2$

Answer

$\sqrt{5} - 2$

Answer

$\sqrt{3} - 1$

Answer

$\sqrt{7} - 2$

Answer

$\sqrt{7} - \sqrt{3}$

JEE Main 27 July 2022, Shift 1, Maths Q15