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Question #9667f

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Feb 16, 2017

#LHS=1-sin^2v/(1+cosv)#

#=1-(1-cos^2v)/(1+cosv)#

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

#=1-(1-cosv)#

#=1-1+cosv=cosv=RHS#

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