Find the Exact Value Without Using a Calculator $\cot \left( \frac { - 5 \pi } { 6 } \right)$

Multiple Choice

Find the exact value without using a calculator.
- $\cot \left( \frac { - 5 \pi } { 6 } \right)$

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