Suppose That $\triangle A B C$ Is a Right Triangle With $\angle C = 90 ^ { \circ }$

question 17

Multiple Choice

Suppose that $\triangle A B C$ is a right triangle with $\angle C = 90 ^ { \circ }$ . If $A B = 3$ and $B C = \frac { 3 \sqrt { 3 } } { 2 }$ , find the quantities. $\cos A , \sin B$

• A) \(\cos A = \frac { 1 } { 3 } , \sin B = \frac { \sqrt { 3 } } { 2 }\)
• B) \(\cos A = \frac { 1 } { 2 } , \sin B = \frac { 1 } { 2 }\)
• C) \(\cos A = \frac { \sqrt { 3 } } { 2 } , \sin B = \frac { \sqrt { 3 } } { 2 }\)
• D) \(\cos A = \frac { 2 } { 3 } , \sin B = \frac { \sqrt { 3 } } { 2 }\)
• E) \(\cos A = \frac { \sqrt { 3 } } { 2 } , \sin B = \frac { 1 } { 3 }\)

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