please help me solve the rest, I get to sin A = 7/22 but then dont know how to solve that to get my final answer, thank you!

Given:
The height is 7 ft.
The length of the ramp is 22 ft.
To find the angle:
Using the trigonometric ratio,
[tex]\begin{gathered} \sin \theta=\frac{Opp}{\text{Hyp}} \\ \sin \theta=\frac{7}{22} \\ \theta=\sin ^{-1}(\frac{7}{22}) \\ \theta=18.55 \\ \theta\approx18.6^{\circ} \end{gathered}[/tex]Hence, the angle is 18.6 degrees.