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 ?>
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https://www.php.net/manual/en/function.tan.php