Question

A man standing on the top of a building observing a
flag 9 m away from the building such that the angle
of depression of the flag to be 28°. Find the height
of the building​

Answer 1

Answer:

Let height of pole=lmeter

In ΔABC−tan13=9h⇒h=9tan13

In ΔCDE−tan28=9l−h⇒l=9tan28+9tan13l=6.86m