tanÂŽ-cote = – InterviewSolution

1.	tanÂŽ-cote =
Answer» a^2=tan^2x+cot^2xb=tanx-cotxso b^2=tan^2x-2tanxcotx+cot^2xso a^2-b^2=tan^2x+cot^2x-tan^2x+2-cot^2x=2Hence Proved

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