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Prove that (1+tan^(2)A)/(1+cot^(2)A)=((1...

Prove that `(1+tan^(2)A)/(1+cot^(2)A)=((1-tan A)/(1-cot A))^(2)=tan^(2)A`

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The correct Answer is:
`= tan^(2)` A LHS = RHS.
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