Evaluate the Function Requested $\cos B$
A) $\cos B = \frac { 9 } { 40 }$

Multiple Choice

Evaluate the function requested. Write your answer as a fraction in lowest terms.
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Find $\cos B$ .

A) $\cos B = \frac { 9 } { 40 }$
B) $\cos B = \frac { 40 } { 41 }$
C) $\cos B = \frac { 9 } { 41 }$
D) $\cos B = \frac { 41 } { 40 }$