Question

Please find the value of X

Answer 1

x ≈ 21.3

Explanation:

using the sine ratio in the right triangle

sin80° =
`(opposite)/(hypotenuse)` =
`(21)/(x)` ( multiply both sides by x )

x × sin80° = 21 ( divide both sides by sin80° )

x =
`(21)/(sin80)` ≈ 21.3 ( to 1 decimal place )