Question #a9340

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Answer 1 · 2017-12-19T14:41:22

#LHS=(1+cosecx)(1-sinx)#

#=(1+1/sinx)(1-sinx)#

#=((sinx+1)/sinx)(1-sinx)#

#=(1-sin^2x)/sinx#

#=cos^2x/sinx#

#=cosx*cosx/sinx#

#=(cosx)(cotx)=RHS#