note 37623 added to function.atan

From: Date: Fri, 21 Nov 2003 05:10:47 +0000
Subject: note 37623 added to function.atan
Groups: php.notes 
Request: Send a blank email to php-notes+get-60735@lists.php.net to get a copy of this message
I looked for hours trying to come up with a formula to solve the direction that a line was heading (in degrees) when x1,y1 were the starting points, and x2,y2 are the ending points. Here is the equasion I was given, I hope this helps anyone in need of the same one. $angle = rad2deg(atan2(($y2 - $y1), ($x2 - x1))); ---- Manual Page -- http://www.php.net/manual/en/function.atan.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+37623 Delete -- http://master.php.net/manage/user-notes.php?action=delete+37623&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+37623&report=yes Search -- http://master.php.net/manage/user-notes.php

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