Solve this.........
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L.H.S.=cos thita/cosec thita+1 + cosec thita/cos thita-1
=2cos^2thita×cosec^2 thita/cosec^2thita-1
=2cos^2 thita×cosec^2 thita/1+cot^2 thita -1
=2cos^2 thita ×1/sin^2 thita/ cos^2 thita/sin^2 thita
=2cos^2thita/sin^2thita × sin^2thita/cos^2thita
=2
=R.H.S
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