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How to find coordinates of intersection of a line and a circle
Posted on 20041014
Hello experts,
I have a circle plotted in x,y coordinates. The center is at (14,5) with a radius of 5.
I have a point (*) at (16,6). I need a formula to determine the x,y coordinates where
a line intersects the circle (at ? below) if drawn from the center of the circle through the point *.
y

 .
 . ?.
 *
 . @ .

 . .
 .

+x
The coordinates I gave are just an example, I need a formula to solve any center, radius and * point.
BTW: This is not a homework problem. If I had paid more attention in geometry though I would
proabably know how to do this. This is not really a Java problem but I didn't know the
best forum to post it in.