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Express the Sum or Difference as a Product of Sines $\sin ( 4 \theta ) - \sin ( 2 \theta )$

Question 99

Multiple Choice

Express the sum or difference as a product of sines and/or cosines.
- $\sin ( 4 \theta ) - \sin ( 2 \theta )$

A) $\sin ( 3 \theta ) \cos \theta$
B) $\sin \theta \cos ( 3 \theta )$
C) $2 \sin ( 3 \theta ) \cos \theta$
D) $2 \sin \theta \cos ( 3 \theta )$

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