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[1+tan^2A/1+cot^2A]=
[1+tan^2A/1+cotA]^2=tan^2A
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Answer:
Step-by-step explanation:
=1+tan^2a/1+cot^2a
=sec^2a/cosec^2a
=1/cos^2a/1/sin^2a
=tan^2a
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