Question

A mover places a cylindrical container on a dolly, as shown. Calculate the angle of elevation, U,

from the base of the dolly to the ground.
A. 52.0°
B. 38.0°
C. 38.6°
D. 51.4°

Answer 1

Check the picture below.

`\sin( \theta )=\cfrac{\stackrel{opposite}{0.5}}{\underset{hypotenuse}{0.64}} \implies \sin^(-1)(~~\sin( \theta )~~) =\sin^(-1)\left( \cfrac{0.5}{0.64} \right) \\\\\\ \theta =\sin^(-1)\left( \cfrac{0.5}{0.64} \right)\implies \theta \approx 51.4^o`

Make sure your calculator is in Degree mode.