Question

Find the value of x. Round measures to the nearest tenth (one decimal place).

Answer 1

x ≈ 12.1

Explanation:

using the cosine ratio in the right triangle

cos34° =
`(adjacent)/(hypotenuse)` =
`(10)/(x)` ( multiply both sides by x )

x × cos34° = 10 ( divide both sides by cos34° )

x =
`(10)/(cos34)` ≈ 12.1 ( to the nearest tenth )