Question: Prove sin(2x+x)=3 sinx-4 sin^3x.(It is true, so do not say No Solution or Not an identity.) Your steps in a clear, logical form that can

Prove sin(2x+x)=3 sinx-4 sin^3x.(It is true, so do not say "No Solution" or "Not an identity.) Your steps in a clear, logical form that can be easily understood.When you use an identity, you must state which identity to receive full credit

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