can any one answer my question
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Step-by-step explanation:
Take LHS
1-TanA / 1+TanA = 1-SinA÷CosA / 1+SinA÷Cos
= CosA-SinA / CosA+SinA
Dividing By Sin A , we get
CotA-1 / CotA+1 = RHS
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