tan
tan
(PHP 4, PHP 5, PHP 7)
tan — Tangent
Description
float tan ( float $arg )
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
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.tan.php
