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 GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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