Use the Sum-To-Product Formulas to Select the Sum or Difference $$\sin 7 \theta + \sin 5 \theta$$

question 39

Multiple Choice

Use the sum-to-product formulas to select the sum or difference as a product. $$\sin 7 \theta + \sin 5 \theta$$

• A) \(2 \cos 6 \theta \cos \theta\)
• B) \(2 \sin 7 \theta \cos 5 \theta\)
• C) \(2 \sin 6 \theta \sin \theta\)
• D) \(2 \cos 6 \theta \sin \theta\)
• E) \(2 \sin 6 \theta \cos \theta\)

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