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    aconstantakos's Avatar
    aconstantakos Posts: 1, Reputation: 1
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    #1

    Nov 11, 2012, 11:59 AM
    verifying identities calculator
    (cosx/(1-sin^2)) + ((1-sinx)/cosx) = 2secx
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Nov 12, 2012, 07:56 AM
    No, it doesn't. Using 1-sin^2x = cos^2x, the first term is equivalent to 1/cosx. Add that to the second term and you get (2-sinx)/cosx, which is not the same thing as 2secx
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