Using the given information, let's make a diagram
To find x, we just have to use the sine function which is equivalent to the ratio between the opposite leg and the hypotenuse.
[tex]\begin{gathered} \sin x=\frac{20}{80}=\frac{1}{4} \\ x=\sin ^{-1}(\frac{1}{4}) \\ x\approx14 \end{gathered}[/tex]
Hence, the angle of elevation is 14°.
