Answer:
x ≈ 25.1
Step-by-step explanation:
Using the cosine ratio in the right triangle, that is
cos64° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{11}{x}[/tex] ( multiply both sides by x )
x × cos64° = 11 ( divide both sides by cos64° )
x = [tex]\frac{11}{cos64}[/tex] ≈ 25.1 ( to the nearest tenth )
