Express the product as a sum containing only sines or cosines.sin(5?) sin(2?)
A. sin2(10?2)
B. 
[cos(7?) - cos(3?)]
C. 
[ cos(3?) - cos(7?)]
D. 
[sin(7?) + cos(3?)]
Answer: C
Mathematics
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A. 28 B. -8 C. all real numbers D. ?
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A. p - 4 + 
B. p - 5 + 
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