Answer:
x ≈ 11.1
Step-by-step explanation:
Using the cosine ratio in the right triangle.
cos42° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{x}{15}[/tex] ( multiply both sides by 15 )
15 × cos42° = x, then
x ≈ 11.1 ( to the nearest tenth )
