Question

How would you find the angle of depression from the top of a lighthouse to a boat if the light house is 210 ft. tall and the ship is 3000 ft. west of the light house?

Answer 1

Angle of depression is `4.0^0`

Explanation:

Let angle of depression is `theta`. Here `tan theta`=(Perp. dist)/(Horiz.dist) . `:.tan theta=210/3000 or theta=tan^-1(.07)= 4^0` [Ans]