ScotlandPHP 2019

tan

(PHP 4, PHP 5, PHP 7)

tanTangent

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

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User Contributed Notes 2 notes

up
-1
farba36 at yahoo dot com
4 years ago
Kotanjant için başka bir çözüm
<?php
$degrees
= 30;
echo
"$degrees derecelik açının kotanjant değeri: " . 1/tan(deg2rad($degrees));
?>
up
-7
georgedot at gmail dot com
9 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));
}
?>
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