cosx - cotx\ cosx +cotx= sinx-1\sinx+1
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hence its proved...!!!
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LHS
cosx-cosx/sinx /cosx+cosx/sinx
sinx*cosx-cosx/sinx/sinxcosx+cosx/sinx
sinxcosx-cosx/sinx*sinx/sinxcosx+cosx
sinxcosx-cosx/sinxcosx+cosx
cosx (sinx-1)/cosx (sinx+1)
sinx-1/sinx+1 RHS
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