NAME
  ATN, COS, SIN, TAN Functions

SYNOPSIS
  ATN(numeric-expression)
  COS(angle)
  SIN(angle)
  TAN(angle)
      o numeric-expression    The ratio between the sides of a right triangle.
      o angle                 An angle expressed in radians.
      o The ATN function returns an angle in radians.
      o To convert from degrees to radians, multiply degrees by (PI / 180).

DESCRIPTION
  ATN, COS, SIN, TAN Functions
  ATN returns the arctangent of a specified numeric expression.
  COS, SIN, and TAN return the cosine, sine, and tangent of a specified angle.

  Example:
      CONST PI=3.141592654
      PRINT ATN(TAN(PI/4.0)), PI/4.0    'Output is:  .7853981635  .7853981635
      PRINT (COS(180 * (PI / 180)))     'Output is:  -1
      PRINT (SIN(90 * (PI / 180)))      'Output is:  1
      PRINT (TAN(45 * (PI / 180)))      'Output is:  1.000000000205103

SEE ALSO
  none