COS()
 To return the COSINE of a degree.
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 Syntax

      COS( <nDegree> ) -> nCos

 Arguments

      <nDegree> is a numeric value representing a degree value.

 Returns

      COS() returns the cosine value of <nDegree>.

 Description

      COS() is a trigonometrical function that returns the cosine value of
      a degree.

      For radians, see COSR().

      Accuracy is to the twelfth decimal (i.e. .00000000001)

 Examples

      ? Str( COS(45), 11,  9)  // returns 0.707106781
      ? Str( COS(60), 11,  9)  // returns 0.500000000

 Files: CALC.LIB

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