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Math Help - Two Circles Reflecting

  1. #1
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    Joined
    May 2008
    Posts
    5

    Two Circles Reflecting



    Not to scale. Angles and distances for example only

    Known:
    radius of large ball (r1)
    radius of small ball (r2)
    line BC = r1 + r2
    line AD
    line AB
    point A
    point B
    point D
    angle BAC

    Find:
    lind CD
    line AC = line AD + line CD
    point C

    Anyone know what formula I would use to find point c, based on what info I DO have? Basically I know the length of two sides, and an angle (but not the angle between them). If I can find the length of the other side I can then find the point myself.

    Thanks!
    -Jason
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  2. #2
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    Joined
    May 2008
    Posts
    5
    This seems to be called an SSA triangle -- side, side, angle. I'll see if I can track down anything about those on google.
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