[tex]\begin{gathered} \cos (\theta)=\frac{\text{adjacent side}}{\text{hypotenuse}} \\ \text{ te} \\ \cos (\theta)=\frac{8}{10} \\ \\ \cos (\theta)=0.8 \\ \\ \theta=\arccos (0.8) \\ \\ \theta=36.87\degree \\ \\ \text{if we approximate to the nearest unit, the angle is 37\degree} \end{gathered}[/tex]
