The answer is: 12.30 degrees.
The explanation for this exercise is shown below:
1. You can make a right triangle as you can see in the picture attached, where [tex]\alpha[/tex] is the angle asked, the opposite side is 4.8 meters and the adjacent side is 22 meters.
2. Therefore, you can use [tex]tan^{-1}[/tex] to calculate the angle, as following:
[tex]tan^{-1}(\alpha)=\frac{opposite}{adjacent}\\tan^{-1}(\alpha)=\frac{4.8}{22}\\\alpha=12.30degrees[/tex]
