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  3. determine which of the following double identity r

Determine which of the following double identity replacements is the best accurate choice in solving...

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Calculus

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Determine which of the following double identity replacements is the best accurate choice in solving the equation cos x cos 2x 0 cos x 2 cos x sin x 0 None of these O cos x cos r sin x 0 cos x 2 cos x 1 0 cos x 1 2 sin x 0 G

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