Find a Cofunction with the Same Value as the Given $\sin 20 ^ { \circ }$

Multiple Choice

Find a cofunction with the same value as the given expression.
- $\sin 20 ^ { \circ }$

A) $\cos 70 ^ { \circ }$
B) $\cos 20 ^ { \circ }$
C) $\tan 70 ^ { \circ }$
D) $\cot 70 ^ { \circ }$