Posted by tbrunz on Sep 09, 2020; 3:57pm
URL: https://forum.world.st/sideOf-logic-tp5121532p5121539.html

I'm not sure, but I suspect this is a helpful method for things in analytic
geometry.

I.e., if you have a ray and a point, it would allow you to determine the
direction to move for the shortest path (in polar coordinates, for example).

-t



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