Solved

Find the Exact Value of the Expression $\cos \left( - 2130 ^ { \circ } \right)$

Question 206

Multiple Choice

Find the exact value of the expression.
- $\cos \left( - 2130 ^ { \circ } \right)$

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

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