SOLUTION: Prove: 1-cot^2x/1+cot^2x=2cos^2-1

SOLUTION: Prove: 1-cot^2x/1+cot^2x=2cos^2-1

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Question 890004: Prove:
1-cot^2x/1+cot^2x=2cos^2-1
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

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