cos

(PHP 4, PHP 5)

cos — Oblicza cosinus kąta

Opis

float cos ( float $argument )

Funkcja cos() zwraca cosinus kąta argument podanego w radianach.

Example #1 cos() przykład


<?php

echo cos(M_PI); // -1

?>

Patrz także: acos(), sin(), tan() i deg2rad().

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cos

joescuriosityshoppe at gmail dot com
13-Oct-2006 11:55


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

?>

felipensp at gmail dot com
12-Mar-2006 02:29


Convert degree to radianus, radianus to cos.



<?php



    // Degree

    $degree = 360;



    // Convertion

    print cos(deg2rad($degree));



?>

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cosh

ceil

Last updated: Fri, 27 Jun 2008