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

    Mar 2, 2009, 05:07 PM
    proving trigonometric identities
    how do you prove

    (cosx/ (1+sinx) ) + ((1+sinx)/cosx) = 2secx
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Mar 2, 2009, 05:26 PM






    Now, factor the numerator, cancel and see what remains.
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