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Math Help - 2cosēθ+6cosθ=3

  1. #1
    Newbie
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    2cosēθ+6cosθ=3

    thanks for your help!
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  2. #2
    MHF Contributor
    Joined
    Sep 2008
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    West Malaysia
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    This is the same as one of your previos thread .

    First , replace \cos\theta with x . After that use the quadratic formula to find x , then solve for \theta
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