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If Sin X = U, Express Sin(3x) in Terms of U

Question 31

Multiple Choice

If sin x = U, express sin(3x) in terms of U.

A) 3U - 4U³
B) 3U + 4U³
C) -3U + 4U³
D) 4U - 3U³
E) 2U + 3U²

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