Find the Exact Value by Using a Half-Angle Identity $\tan 345 ^ { \circ }$

Multiple Choice

Find the exact value by using a half-angle identity.
- $\tan 345 ^ { \circ }$

A) $\sqrt { 3 } - 2$
B) $- \sqrt { 3 } + 2$
C) $\sqrt { 3 } + 2$
D) $- \sqrt { 3 } - 2$