cotA-cosA÷cotA+cosA=cosecA-1÷cosecA+1
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Step-by-step explanation:
{(CosA/SinA) - CosA / (CosA/SinA)+ CosA}
{ CosA-CosASinA / CosA+CosASinA }
1 - SinA / 1 + SinA
CosecA - 1 / CosecA + 1
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