Use Even and Odd Properties of the Trigonometric Functions to Find

Multiple Choice

Use even and odd properties of the trigonometric functions to find the exact value of the expression.
- $\sin \left( - 120 ^ { \circ } \right)$

A) $- \frac { \sqrt { 3 } } { 2 }$
B) $- \frac { 1 } { 2 }$
C) $\frac { 1 } { 2 }$
D) $\frac { \sqrt { 3 } } { 2 }$