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

    Oct 7, 2010, 10:04 PM
    establish the identity
    can someone please show me how to establish this identity?
    1+sin(a)+cos(a) / 1+sin(a)-cos(a) = 1+cos(a) / sin(a)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 8, 2010, 12:41 AM

    Group some terms and 'rationalise'



    Take do this and simplify. You should be getting close to the solution easily enough. Post what you get! :)
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