Php/docs/function.cos
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cos
(PHP 4, PHP 5, PHP 7)
cos — Cosine
Description
cos
( float $arg
) : float
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
<?phpecho cos(M_PI); // -1?>
