Question

Find the length of side xz give your answers to 3 significant figures

Answer 1

XZ ≈ 14.4 cm

Explanation:

Using the cosine ratio in the right triangle

cos29° =
`(adjacent)/(hypotenuse)` =
`(ZY)/(XZ)` =
`(12.6)/(XZ)`

Multiply both sides by XZ

XZ × cos29° = 12.6 ( divide both sides by cos29° )

XZ =
`(12.6)/(cos29)` ≈ 14. 4 ( to 3 sig. figs )