Hi, can you help to solve the exercise #13 please!!

Answer:
[tex]x=39\text{ degrees}[/tex]Step-by-step explanation:
This problem can be approached using trigonometric ratios, which are represented by:
Therefore, for an opposite side equals to 4 and adjacent equal to 5:
[tex]\begin{gathered} \tan (x)=\frac{4}{5}_{} \\ x=\tan ^{-1}(\frac{4}{5}) \\ x=38.6\text{ } \\ \text{Rounding:} \\ x=39\text{ degrees} \end{gathered}[/tex]