Cot A- Tan A = 2 cos^2 A/Sin A CosA
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Step-by-step explanation:LHS=cotA-tanA
cosA/sinA -sinA/cosA
cos^2A-sinA^2A/sinA*cosA
Cos^2Ax(1-cos^2A)/sinA*cosA
2cosA^2-1/sinA*cosA=RHS
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