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Thread: [RESOLVED] Angles of Lines Tangent to Circle

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  1. Oct 2nd, 2006, 06:29 PM #1
    sgrya1
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    Resolved [RESOLVED] Angles of Lines Tangent to Circle

    Hi all.

    Anyone here able help me out?

    I need to find the angles of the two lines that are tangent to a circle and pass through the origin. Problem is I need the angles to be an angular direction ie 0 to 2pi from the origin which is obviously be dependant on the location of the circle relative to the origin.

    I can work out the angles of the lines (0 to +-pi) but not the angular directions.

    Guess I have to put in quite a few ifs and buts about the positions of the tangent points.
    Last edited by sgrya1; Oct 2nd, 2006 at 06:38 PM.
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