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Math Help - Trigonometry question, please help!

  1. #1
    zxe
    zxe is offline
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    Unhappy Trigonometry question, please help!

    hey people, here's the question that i have absolute no idea to answer...

    A triangle ABC is right-angled at B
    D is the point on AC such that BD is perpendicular to AC
    Let Angle BAC = x
    You are given that 6AD + BC = 5AC

    Find x
    I had drawn the diagram on my book but i have no idea what to do to find x
    Please help, would be much appreciated.
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  2. #2
    Flow Master
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    Quote Originally Posted by zxe View Post
    hey people, here's the question that i have absolute no idea to answer...

    I had drawn the diagram on my book but i have no idea what to do to find x
    Please help, would be much appreciated.
    Triangles ABD, BCD and ACB are all similar ....
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