Question

A wheelchair ramp is to be built beside the steps to the campus library. Find the angle of elevation of the 20​-foot ​ramp, to the nearest tenth of a​ degree, if its final height is 5 feet.

Answer 1

14.5°

Explanation:

length of ramp, l = 20 foot

height of ramp, h = 5 foot

Let θ is the angle of inclination

Sin θ = h/l

Sin θ = 5 / 20

Sin θ = 0.25

θ = 14.5°

Thus, the inclination of ramp is 14.5°.