The angle of elevation of the top of... | Trigonometry

JEE MAIN 2019

12-04-2019 S2

Question

The angle of elevation of the top of a vertical tower standing on a horizontal plane is observed to be 45° from a point A on the plane. Let B be the point 30 m vertically above the point A. If the angle of elevation of the top of the tower from B be 30°, then the distance (in m) of the foot of the tower from the point A is :

Select the correct option:

$15(3+\sqrt{3})$

$15(1+\sqrt{3})$

$15(3-\sqrt{3})$

$^{15(5-\sqrt{3})}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution