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Math Help - Mickey mouse problem

  1. #1
    Junior Member
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    Mickey mouse problem

    The figure shows three circles (representing head and ears of Mickey Mouse) where a, b and c are respective radii, and d is the length of the exterior tangent. Prove that: .

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  2. #2
    MHF Contributor
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    Re: Mickey mouse problem

    Hey geniusgarvil.

    Can you show us what you have tried and the relationships you have used so far?
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  3. #3
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    Re: Mickey mouse problem

    Hint: Find BC. Then compare triangles AFG and ABC.
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