Question

Round to the nearest hundredth
(please help picture inculded) ​

Answer 1

AB ≈ 6.53

Explanation:

using the cosine ratio in the right triangle

cos40° =
`(adjacent)/(hypotenuse)` =
`(AC)/(AB)` =
`(5)/(AB)` ( multiply both sides by AB )

AB × cos40° = 5 ( divide both sides by cos40° )

AB =
`(5)/(cos40)` ≈ 6.53 ( to the nearest hundredth )