Question

16) Solve for side AB.

AB-
Round your answer to the nearest hundredth.

A) 5.45
B) 6.45
C) 7.45

Answer 1

In this triangle, side AB is the hypotenuse.

In order to find the hypotenuse, we can use the trigonometric function “cosine”,
since.

Cosine =
Adjacent side (which is 7) / hypotenuse

Cos(50) = 7 / AB

AB = 7 / Cos(50)

AB = 10.89006678802289

AB ≈ 10.89

Have a good day ^^

Answer 2

AB= 7.45

Anwer C)

Explanation:

Cos (angle) = Nearest side / Huypothenuse

Cos(20) = 7 / AB

Cos(20) * AB = (7 /AB) * AB

Cos (20) * AB = 7

(Cos(20) *AB) / Cos(20) = 7 / Cos(20)

AB = 7 / cos(20)

AB= 7.45