Question

Find the value of x. Round to the
nearest tenth.
40°
х
7
x =

Answer 1

x ≈ 10.9

Explanation:

Using the sine ratio in the right triangle

sin40° =
`(opposite)/(hypotenuse)` =
`(7)/(x)` ( multiply both sides by x )

x × sin40° = 7 ( divide both sides by sin40° )

x =
`(7)/(sin40)` ≈ 10.9 ( to the nearest tenth )