Answer:
48°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos ? = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{36}{54}[/tex], thus
? = [tex]cos^{-1}[/tex]([tex]\frac{36}{54}[/tex] ≈ 48° ( to the nearest degree )
