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Cos2A +Cos2A.Cot2A =Cot2A.......(2 is square here )

Answer» cos^2A + cos^2A x cot^2A= cos^2A (1 + cot^2A)= cos^2A x cosec^2A ( since cosec^2A -cot^2A=1)=cos^2A/sin^2A=cot^2A


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