COS(3) 1 COS(3)cos - CosineSYNOPSIS
float cos (float $arg)
DESCRIPTION cos(3) returns the cosine of the $arg parameter. The $arg parameter is in radians.
PARAMETERS
o $arg
- An angle in radians
RETURN VALUES
The cosine of $arg
EXAMPLES
Example #1
cos(3) example
<?php
echo cos(M_PI); // -1
?>
SEE ALSO acos(3), sin(3), tan(3), deg2rad(3).
PHP Documentation Group COS(3)
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main()
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