Answer:
x ≈ 38.3°
Step-by-step explanation:
using the cosine ratio in the right triangle
cos x = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{4}{5.1}[/tex] , then
x = [tex]cos^{-1}[/tex] ( [tex]\frac{4}{5.1}[/tex] ) ≈ 38.3° ( to the nearest tenth )
