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    KTC143's Avatar
    KTC143 Posts: 2, Reputation: 1
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    #1

    Mar 17, 2012, 07:11 PM
    prove ((sec(x)-csc(x))/((sec(x)+cot(x)) is equal to ((tan(x)-1)/(tan(x)+1)
    Prove this trigonometric identity... I dare you!!
    KTC143's Avatar
    KTC143 Posts: 2, Reputation: 1
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    #2

    Mar 17, 2012, 07:14 PM
    prove ((sec(x)-csc(x))/((sec(x) cot(x)) is equal to ((tan(x)-1)/(tan(x) 1)
    Please help!. alabama high school homework... trigonometric identity
    Phabio's Avatar
    Phabio Posts: 5, Reputation: 1
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    #3

    Mar 17, 2012, 08:00 PM
    Change both the sides of the equation to sines and cosines and you should be able to find it out from their
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #4

    Mar 19, 2012, 06:19 AM
    The identity is incorrect, so it can't be proven. I suspect that the identity you are trying to prove is actually this:



    As Phabio said - convert the functions to sine and cosine equivalents and work from there.
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