Question

Use special right triangles to solve for the exact value of x.

Answer 1

hope it helps you see the attachment

Answer 2

x = 16

Explanation:

Using the cosine ratio in the right triangle and the exact value

cos60° =
`(1)/(2)`

cos60° =
`(adjacent)/(hypotenuse)` =
`(8)/(x)`

Multiply both sides by x

x × cos60° = 8, that is

x ×
`(1)/(2)` = 8

Multiply both sides by 2

x = 16