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1+tan^2a/1+cot^2a=(1-tana/1-cota)^2 solve it only from LHS
Dear studentLhsWrite sqr( cot a ) = 1/ sqr tan (a)Simplify lhs = sqr( tan a)= Tan a * tan a= Tan a * tan a * 1*1= Tan * tan a * ( 1- tana)/( 1- tan a ) * ( 1-tan a)/(1+tan a)= Take one tan a = 1/ cot aMultiply with each bracket as per EQUATION and obtain rhsRegards
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