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Express the Sum or Difference as a Product of Sines sin⁡(7θ)+sin⁡(3θ)\sin ( 7 \theta ) + \sin ( 3 \theta )

Question 41

Multiple Choice

Express the sum or difference as a product of sines and/or cosines.
- sin⁡(7θ) +sin⁡(3θ) \sin ( 7 \theta ) + \sin ( 3 \theta )


A) 2sin⁡(5θ) sin⁡(2θ) 2 \sin ( 5 \theta ) \sin ( 2 \theta )
B) 2cos⁡(5θ) sin⁡(2θ) 2 \cos ( 5 \theta ) \sin ( 2 \theta )
C) 2sin⁡(10θ) 2 \sin ( 10 \theta )
D) 2sin⁡(5θ) cos⁡(2θ) 2 \sin ( 5 \theta ) \cos ( 2 \theta )

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