COS
===

Function
--------

**COS** returns the Cosine of the argument.

Syntax
------

COS(Angle)

Where angle is in radians.

Examples
--------

::

   X = COS(Y)

sets X equal to the cosine of Y.

::

   R = COS(5)

sets R equal to the cosine of 5 radians.

Remarks
-------

For angles in degrees use:

::

   X=COS(A/180*PI)