Use the Sum-To-Product Formulas to Find the Exact Value of the Given

question 19

Multiple Choice

Use the sum-to-product formulas to find the exact value of the given expression. $\cos 150 ^ { \circ } - \cos 30 ^ { \circ }$

• A) 1
• B) \(- 1\)
• C) \(- \sqrt { 3 }\)
• D) \(- \frac { \sqrt { 3 } } { 2 }\)
• E) 0

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The consideration and integration of various viewpoints and disciplines when evaluating or solving a problem.

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A conventional method of evaluating work performance, typically conducted annually by managers or supervisors.

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