Question

Serena hits a tennis ball downward from the top of the net at which the angle of

depression is 20°. If the net is 0.9 m high, how far from the net does the ball land to
the nearest tenth of a metre?

Answer 1

2.5 meter

Explanation:

in a right triangle, tan of an angle = opposite side /adjacent side

tan 70° = x/ 0.9 , multiply both sides by 0.9

0.9 * tan 70° = x, solve on a calculator

x ≈ 2.5 m