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Cosec / cosec - 1 + cosec / cosec + 1=2sec

Answer» Cross multiply first then you will get,Cosec2+cosec+cosec2-cosec/cosec2-1= 2cosec.squard theta/cot squard thetaNext expand it,2× 1/sin× 1/sin ÷ cos/ sinSin theta will be cancelled.You will get, 2×1/cos= 2Sec theta


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