COS
Returns the cosine of an angle.
    Syntax
COS(Value)
Value is an angle in radians or a
        formula which returns an angle in radians.
Example
This example returns 1:
COS(0)
This example returns 0:
COS(1.5708)
      
COS(Value)
Value is an angle in radians or a
        formula which returns an angle in radians.
This example returns 1:
COS(0)
This example returns 0:
COS(1.5708)