Question

[1+tan2A/1+cot2A]=[1-tanA/1-cotA]
$(1 + \tan ^{2} a \div 1 + \cot^{2} a) = (1 - \tan \: a \div 1 - \cot \: a) ^{2} = \tan^{2} a$
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Answer 1

Answer:

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