Express the function as a trigonometric function of x.
-$\sin 3 x$
A) $4 \sin x \cos ^ { 3 } x - 4 \sin ^ { 3 } x \cos x$
B) $\cos ^ { 3 } x - 3 \sin ^ { 2 } x \cos x$
C) $1 - 8 \sin ^ { 2 } x \cos ^ { 2 } x$
D) $3 \sin x - 4 \sin ^ { 3 } x$

Question

Quizplus · Accepted Answer

The correct expression for $\sin 3x$ using trigonometric identities is $3 \sin x - 4 \sin ^ { 3 } x$. This is derived from the triple angle formula for sine.

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