Use the product-to-sum identities to rewrite the expression as the sum or difference of two functions.sin 3? sin 7?

A. [cos 10? - sin 4?]
B. [- cos 4? - cos 10?]
C. [cos 4? - cos 10?]
D. sin2 21?2

Answer: C

Mathematics

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Convert the measurement as indicated. Round to the nearest tenth, if necessary.31.48 L to gallons

A. 8.2 gal B. 33.4 gal C. 29.9 gal D. 119.0 gal

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Solve the formula for the indicated variable.P = s1 + s2 + s3  for s1

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