Cosine is adjacent / hypotenuse. You need to know SOH CAH TOA or your goose is cooked
So cosine of B is Y/Z which is 80/82 which reduces to 40/41 answer D
Moe T.
asked • 04/17/19help please thank you
3.
If X = 18 inches, Y = 80 inches, and Z = 82 inches, what is the cosine of 
B?
A.
B.
C.
D.
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