Express the Function as a Trigonometric Function of X $\cos 4 \mathrm { x }$

question 405

Multiple Choice

Express the function as a trigonometric function of x.
- $\cos 4 \mathrm { x }$

• A) \(\cos ^ { 4 } x - 6 \sin ^ { 2 } x \cos ^ { 2 } x + \sin ^ { 4 } x\)
• B) \(3 \sin x - 4 \sin ^ { 3 } x\)
• C) \(4 \sin x \cos ^ { 3 } x - 4 \sin ^ { 3 } x \cos x\)
• D) \(\cos ^ { 3 } x - 3 \sin ^ { 2 } x \cos x\)

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