Use an Identity to Write the Expression as a Single $$\frac { \sin 40 ^ { \circ } } { 1 - \cos 40 ^ { \circ } }$$

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $$\frac { \sin 40 ^ { \circ } } { 1 - \cos 40 ^ { \circ } }$$

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