(1+tan2A/1+cot2a)=(1-tanA/1-cotA)2=tan2A

1.	(1+tan2A/1+cot2a)=(1-tanA/1-cotA)2=tan2A
Answer» The ans is quiet long, but you will get it NCERT maths text book, ch-8,exercise 8.4,Q5,subQ10

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