Question

Please help

ASAP

ANSWERS

A-48.21
B-66.35
C-53.68
D-28.34

Answer 1

B

Explanation:

Using the cosine ratio in the right triangle

cos54° =
`(adjacent)/(hypotenuse)` =
`(AC)/(AB)` =
`(39)/(AB)` ( multiply both sides by AB )

AB × cos54° = 39 ( divide both sides by cos54° )

AB =
`(39)/(cos54)` ≈ 66.35 → B