cosec A/cosec A-1 + cosec A/cosec A+1=2 sec A
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Given cosec θ+1cosec A+cosec A−1cosec A
Taking LCM
cosecA+1cosecA+cosec A−1cosec A=cosec2A−1cosec2A−cosec A+cosec2A+cosec A
=cosec2A−12cosec2A
As cosec2A−1=cot2A
=cot2A2cosec2A=sin2Acos2Asin2A2=
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