prove that secC-1/secC+1=sin2C/cos+1 whole square

Asked by Smriti | 5th May, 2014, 05:32: PM

Expert Answer:

fraction numerator s e c C minus 1 over denominator s e c C plus 1 end fraction equals fraction numerator open parentheses 1 minus cos C close parentheses open parentheses 1 plus c o s C close parentheses over denominator open parentheses 1 plus c o s C close parentheses open parentheses 1 plus c o s C close parentheses end fraction equals fraction numerator 1 minus cos squared C over denominator open parentheses 1 plus c o s C close parentheses squared end fraction equals fraction numerator sin squared C over denominator open parentheses 1 plus c o s C close parentheses squared end fraction

Answered by Avinash Soni | 6th May, 2014, 09:49: AM

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