note 70368 deleted from function.cos by hholzgra
| From: | hholzgra@php.net | Date: | Thu, 02 Aug 2012 15:32:09 +0000 |
| Subject: | note 70368 deleted from function.cos by hholzgra | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-189872@lists.php.net to get a copy of this message | ||
Note Submitter: joescuriosityshoppe at gmail dot com
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Find the side of a triangle using two sides and an angle:
<?
$a = "10"; // length of side a
$b = "15"; // length of side b
$angle = "45"; // angle opposite side c
$c = (sqrt(pow($a, 2) + pow($b, 2) - $a * $b * cos(deg2rad($angle)) * 2));
// side c = 10.613894770933
?>