Find the exact value of the expression.
-$\sin \left( - 960 ^ { \circ } \right)$
A) $- 1$
B) $\frac { \sqrt { 2 } } { 2 }$
C) $\frac { 1 } { 2 }$
D) $\frac { \sqrt { 3 } } { 2 }$

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The Answer of Find the exact value of the expression.
-$\sin \left( - 960 ^ { \circ } \right)$
A) $- 1$
B) $\frac { \sqrt { 2 } } { 2 }$
C) $\frac { 1 } { 2 }$
D) $\frac { \sqrt { 3 } } { 2 }$

Find the Exact Value of the Expression sin⁡(−960∘)\sin \left( - 960 ^ { \circ } \right)sin(−960∘)

Find the Exact Value of the Expression $\sin \left( - 960 ^ { \circ } \right)$