Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.
-$\cos 46.7 ^ { \circ }$
A) $\sin 43.3 ^ { \circ }$
B) $\sec 133.3 ^ { \circ }$
C) $\sin 46.7 ^ { \circ }$
D) $\cos 133.3 ^ { \circ }$

Question

Quizplus · Accepted Answer

The cofunction identity states that $\sin(\theta) = \cos(90^\circ - \theta)$. Therefore, $\cos(46.7^\circ) = \sin(90^\circ - 46.7^\circ) = \sin(43.3^\circ)$.

Write the Function in Terms of Its Cofunction cos⁡46.7∘\cos 46.7 ^ { \circ }cos46.7∘

Write the Function in Terms of Its Cofunction $\cos 46.7 ^ { \circ }$