cos
cos
(PHP 4, PHP 5, PHP 7)
cos — Cosine
Description
float cos ( float $arg )
cos() returns the cosine of the arg parameter. The arg parameter is in radians.
Parameters
arg
An angle in radians
Return Values
The cosine of arg
Examples
Example #1 cos() example
<?php
echo cos(M_PI // -1
?>
See Also
- acos() - Arc cosine
- sin() - Sine
- tan() - Tangent
- deg2rad() - Converts the number in degrees to the radian equivalent
← ceil
cosh →
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
