Question

Evaluate the function requested. Write your answer as a fraction in lowest terms.

B
123
27
A
120
Find cos B.

Answer 1

d. Cos B = 9/41

Explanation:

Recall, SOHCAHTOA.

Cos B = Adjacent length / Hypotenuse length

Adjacent length to reference angle B = 27

Hypotenuse length = 123

Cos B = 27/123 = 9/41