Question

Find the missing side​

Answer 1

x ≈ 13.7

Explanation:

Using the cosine ratio in the right triangle

cos70° =
`(adjacent)/(hypotenuse)` =
`(x)/(40)` ( multiply both sides by 40 )

40 × cos70° = x , then

x ≈ 13.7 ( to the nearest tenth )