Answer:
x = 16
Step-by-step explanation:
Using the cosine ratio in the right triangle and the exact value
cos60° = [tex]\frac{1}{2}[/tex]
cos60° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{8}{x}[/tex]
Multiply both sides by x
x × cos60° = 8, that is
x × [tex]\frac{1}{2}[/tex] = 8
Multiply both sides by 2
x = 16
