Question

Find the value of x. Round your answer to the nearest tenth. 10 19° x​

Answer 1

x ≈ 9.5

Explanation:

using the cosine ratio in the right triangle

cos19° =
`(adjacent)/(hypotenuse)` =
`(x)/(10)` ( multiply both sides by 10 )

10 × cos19° = x , then

x ≈ 9.5 ( to the nearest tenth )