tan

(PHP 4, PHP 5, PHP 7)

tan — Tangent

Description

tan ( float $arg ) : float

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

Parameters

arg: The argument to process in radians

Return Values

The tangent of arg

Examples

Example #1 tan() example


<?php

echo tan(M_PI_4); // 1

?>

See Also

atan() - Arc tangent
atan2() - Arc tangent of two variables
sin() - Sine
cos() - Cosine
tanh() - Hyperbolic tangent
deg2rad() - Converts the number in degrees to the radian equivalent