cosθ - 2cos³θ
______________ =cotθ
2sin³θ -sinθ
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Answer:
cot θ
Step-by-step explanation:
cos θ(1-2cos^2 θ)/sin θ(2sin^2 θ - 1)
cot θ(- cos 2θ)/(- cos 2θ)
cot θ
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