Question

A ladder 15 feet long leans against a wall making a 71 degree angle with the ground. How far from the base of the wall is the bottom of the ladder?

1. 14.18 feet
2. 4.88 feet
3. 15.86 feet
4. 9.38 feet​

Answer 1

2. 4.88 feet

Explanation:

cos∅ = adj/hyp

cos71 = adj/15

adj = 15*cos71

adj = 4.88