Use Identities to Find the Indicated Value for Each Angle $$\cos \frac { 7 \pi } { 12 } \cos \frac { 5 \pi } { 12 } + \sin \frac { 7 \pi } { 12 } \sin \frac { 5 \pi } { 12 }$$

question 84

Multiple Choice

Use identities to find the indicated value for each angle measure.
- $$\cos \frac { 7 \pi } { 12 } \cos \frac { 5 \pi } { 12 } + \sin \frac { 7 \pi } { 12 } \sin \frac { 5 \pi } { 12 }$$

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

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Organizational Culture

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