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srand	tanh

	Last updated: Tue, 19 Sep 2006

tan

(PHP 3, PHP 4, PHP 5)

tan -- Tangent

Description

float tan ( float arg )

tan() returns the tangent of the arg parameter. The arg parameter is in radians.

Example 1. tan() example

<?php

echo tan(M_PI_4); // 1

?>

See also: atan(), sin(), cos(), and deg2rad().

srand	tanh

	Last updated: Tue, 19 Sep 2006