Find the Exact Circular Function Value $\tan \frac { 7 \pi } { 6 }$

Multiple Choice

Find the exact circular function value.
- $\tan \frac { 7 \pi } { 6 }$

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