Attached image illustrates Eitan's original question which was posted
in p.general as thread entitled, "Geometry Question".
--
Alan - ako### [at] povray org - a k o n g <at> p o v r a y <dot> o r g
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>From: "Eitan Tal" <eit### [at] netvision net il>
>Subject: Geometry Question
>Date: Wednesday, January 24, 2001 12:26 PM
>
>[Image]
>
>I have these two points. there's also Distance X, and an angle between
>the arch and
>the line. if this angle is 45, the radius will become infinite. if this
>angle is 90, the radius
>equals one. (shown above)
>
>a = that angle
>
>from here, it is possible that r = tan(1/2a) + sin(a)
>is that correct? anyone got the exact eqution? and what's the link
>between x and a?
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![geometry.gif](/povray.binaries.images/attachment/%3Cuni07to8vq0dv3k852rgpi5jgf83edema9%404ax.com%3E/geometry.gif?ttop=443840&toff=11300&preview=1)
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