trigonometry with angle of depression

Question

The angle of depression from the top of a 15 m tree down to a pond is 25c41l. If a bird is perched in the top of the tree, how far does it need to fly to reach the pond, to the nearest metre?

Answer 1

h represents the distance (it is the hypotenuse)

 

sin 25°41' = 15/h

h = 15 / sin 25°41'

h ≈ 15 / 0.433

h ≈ 34.642