Question

A ramp leading into a building makes a 15 degree angle with the ground. The end of the ramp is 10 feet from the base of the building. Approximately how long is the ramp?

Answer 1

The length of the ramp is x = AC = 10.35 feet

Explanation:

From the ΔABC

AC = x = length of ramp

BC = 10 feet

`\theta = 15`°

`\cos 15 = (BC)/(AC)`

`\cos 15 = (10)/(x)`

x = 10.35 feet

Therefore the length of the ramp is x = AC = 10.35 feet