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    aoisky15 Posts: 1, Reputation: 1
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    #1

    Oct 19, 2012, 06:23 AM
    trigonometric identities solver
    Need help with proofing these two questions:

    1-sinx/1+sinx= (secx-tanx)^2

    tanx+sec-1/tanx-secx+1= tanx+secx

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