SOLUTION: Prove that: 2cos^3 θ-cos θ/sinθ cos^2 θ-sin^3 θ= cot θ

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Question 994566: Prove that:
2cos^3 θ-cos θ/sinθ cos^2 θ-sin^3 θ= cot θ
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Can't. It is only true at odd multiples of pi/2. Without the lead coefficient of 2 in the numerator, then it works. Was that a typo?

John

My calculator said it, I believe it, that settles it