Question #2e707

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Answer 1 · 2017-02-16T05:57:45

#LHS=(1-sinv)/cosv+cos/(1-sinv)#

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

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

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

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

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

#=2/cosv=2secv=RHS#

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