downloads | documentation | faq | getting help | mailing lists | licenses | wiki | reporting bugs | php.net sites | conferences | my php.net

search for in the

tanh> <srand
[edit] Last updated: Fri, 14 Jun 2013

view this page in

tan

(PHP 4, PHP 5)

tanTangente

Description

float tan ( float $arg )

Retourne la tangente de arg (arg en radians).

Liste de paramètres

arg

L'argument à traiter, en radians

Valeurs de retour

La tangente de arg

Exemples

Exemple #1 Exemple avec tan()

<?php

echo tan(M_PI_4); // 1

?>

Voir aussi



add a note add a note User Contributed Notes tan - [1 notes]
up
1
georgedot at gmail dot com
3 years ago
Workaround for cotangent function

<?php
//FOR PHP 4
function cot($rad)
{
    return
tan(M_PI_2 - rad2deg($rad));
}

//FOR PHP 3
function cot($rad)
{
    return
tan(M_PI/2 - rad2deg($rad));
}
?>

 
show source | credits | stats | sitemap | contact | advertising | mirror sites