Solve the Problem $\tan 15 ^ { \circ } - \frac { \cos 75 ^ { \circ } } { \cos 15 ^ { \circ } }$

Multiple Choice

Solve the problem.
- $\tan 15 ^ { \circ } - \frac { \cos 75 ^ { \circ } } { \cos 15 ^ { \circ } }$

A) 1
B) 0
C) -1
D) 2