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Thread: expressing d in terms of side a, b and c.

  1. April 18th 2012, 06:18 AM #1
    Mhmh96
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    expressing d in terms of side a, b and c.

    express d in terms of side a, b and c. (Two circles is similar)

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  2. April 18th 2012, 06:42 AM #2
    Wilmer
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    Re: expressing d in terms of side a, b and c.

    HINT:
    Treat each triangle separately; you have a common side length d.
    Assign r = 1 (circles' radius)
    Go here:
    Derivation of Formula for Radius of Incircle
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  3. April 18th 2012, 07:16 AM #3
    Mhmh96
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    Re: expressing d in terms of side a, b and c.

    But how to use this formula without knowing the length of any sides in two triangles ?
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