Question

a wheelchair ramp is 4.2 meters long. It rises of 0.7 meter. What is the angle of elevation to the nearest tenth of a degree

Answer 1

Given :

A wheelchair ramp is 4.2 meters long.

It rises 0.7 meters

So, let the angle of elevation = x

so,

$\begin{gathered} \tan x=\frac{0.7}{4.2}=\frac{1}{6} \\ \\ x=\tan ^{-1}\frac{1}{6}=9.462 \end{gathered}$

Rounding the answer to the nearest tenth

So, the answer is : the angle = 9.5