Question

A ramp has an angle of inclination of 20 degrees. it has a vertical height of 1.8 m. what is the length, l metres, of the ramp?

Answer 1

x = 5.26 m

Explanation:

Given that,

The angle of inclination = 20°

The vertical height of the ramp, h = 1.8 m

We need to find the length of the ramp. Let it is x.

We can find it using trigonometry. So,

`\sin\theta=(P)/(H)`

We have,

P = 1.8 m, H = x

`\sin20=(1.8)/(x)\\\\x=(1.8)/(\sin20)\\\\x=5.26\ m`

So, the length of the ramp is 5.26 m.