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    rachel hegel's Avatar
    rachel hegel Posts: 1, Reputation: 1
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    #1

    Nov 5, 2006, 07:21 PM
    Trig
    How do I get "sec x - tan x" equal to "cos x / 1 + sin x"
    dmatos's Avatar
    dmatos Posts: 204, Reputation: 26
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    #2

    Nov 5, 2006, 08:19 PM
    Ooh - that one was tricky. It was easier for me to work backwards. Start with

    cos x / 1 + sin x

    Then multiply top and bottom by (1 - sin x). You should be able to get the rest of the way using your trig identities.
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