Answer:
? ≈ 22°
Step-by-step explanation:
using the cosine ratio in the right triangle
cos ? = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{40}{43}[/tex] , then
? = [tex]cos^{-1}[/tex] ( [tex]\frac{40}{43}[/tex] ) ≈ 22° ( to the nearest whole number )
