Determine the Exact Value of the Following Expression $$\cos \left( 120 ^ { \circ } - 0 ^ { \circ } \right)$$

question 105

Multiple Choice

Determine the exact value of the following expression.
$$\cos \left( 120 ^ { \circ } - 0 ^ { \circ } \right)$$

• A) \(- \frac { \sqrt { 3 } } { 2 }\)
• B) \(\frac { 1 } { 2 }\)
• C) \(\frac { \sqrt { 3 } } { 2 }\)
• D) \(- \frac { 1 } { 2 }\)
• E) \(\frac { 1 } { 2 } - \frac { \sqrt { 3 } } { 2 }\)

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