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MUST BE A NUMERICAL ANSWERTHE ANSWER IS NOT cos^4 x Simplify. cos x - sin x cos x Use algebra and the fundamental trigonometric identities.

MUST BE A NUMERICAL ANSWERTHE ANSWER IS ***NOT*** cos^4 x

Simplify. cos x - sin x cos x Use algebra and the fundamental trigonometric identities. Your answer should be a number or use a single trigonometric function. cos i tan cot sec M csc X

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