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7.1.8 COS
The COS function returns a numeric value that approximates the cosine of the angle or arc specified by the argument in radians.
The function type is numeric. 



    ___ Format _____________________________________________________________ 
   |                                                                        |
   | >>__FUNCTION COS__(argument-1)______________________________________>< |
   |                                                                        |
   |________________________________________________________________________|
argument-1
Must be class numeric.
The returned value is the approximation of the cosine of the argument and is greater than or equal to -1 and less than or equal to +1.

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