What is distance

Question

A blimp provides aerial television views of a baseball game. The television camera sights the stadium at a 17degrees angle of depression. The altitude of the blimp is 400m. What is the​ line-of-sight distance from the television camera to the base of the stadium​? Round to the nearest hundred meters.

Answer 1

h = height of blimp

θ = angle of depression

d = line-of-sight distance from the television camera to the base of the stadium

h/d = sinθ

d = h/sinθ = (400 m) / sin17° = ? m