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Write the Function in Terms of Its Cofunction $\cos 47 ^ { \circ }$

Question 142

Multiple Choice

Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.
- $\cos 47 ^ { \circ }$

A) $\sin 47 ^ { \circ }$
B) $\sin 43 ^ { \circ }$
C) $\cos 137 ^ { \circ }$
D) $\sec 43 ^ { \circ }$

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