Question

A ramp rises 4 ft. and makes a 20 degree with the ground. How
long is the ramp?

Answer 1

P = 1.36 feet

Explanation:

Given that,

Height of ramp, H = 4 ft

The ramp makes an angle of 20 degree with the ground.

We need to find the length of the ramp.

The height of the ramp is the hypotenuse and the length of the ramp is perpendicular of the right angled triangle. Using trigonometry to find the length of the ramp i.e.

`\sin\theta=(P)/(H)\\\\P=H\sin\theta\\\\P=4* \sin(20)\\\\P=1.36\ ft`

So, the length of the ramp is equal to 1.36 feet.