Question

PLEASE HELP!!!! It’s timed

Evaluate the function requested. Write your answer as a fraction in lowest terms.
Triangle A B C. Angle C is 90 degrees. Hypotenuse A B is 41, adjacent B C is 9, opposite A C is 40.

Answer 1

b

Explanation:

we are given opposite, adjacent and hypotenuse

and said to find cos(B)

recall trigonometric identity
`\cos(\theta)=(adj)/(hypo)`

let adj and hypo be 9 and 41 respectively

so

`\displaystyle \: \cos( \beta ) = (9)/(41)`

hence our answer is b