we can use trigonometry
[tex]\sin (a)=\frac{\text{oppositeside}}{\text{hypotenuse}}[/tex]
where a is the angle
oppositeside and the oppiste side from the angle a
so replacing
[tex]\begin{gathered} \sin (\theta)=\frac{5}{25} \\ \\ \theta=\sin ^{-1}(\frac{5}{25}) \\ \\ \theta=\sin ^{-1}(\frac{1}{5}) \\ \\ \theta=11.57 \end{gathered}[/tex]
the measure of theta is 11.57°
