• This function returns the cosine of the given angle or expression.
  • The angle must be expressed in radians.
  • The opposite is the ACS() function.


  1. COS(Number)


  1. Most mathematical operations in Just BASIC can be performed on Literal Numbers, Numeric Variables, or Numeric Expressions that consist of Literal Numbers, Numeric Variables, or both.
  2. There are 2 * pi radians in a full circle of 360 degrees. A formula to convert degrees to radians is: radians = degrees divided by 57.29577951.
  3. Some helpful functions to convert between radians and degrees are available at the ACS() function and ASN() function pages.


Print COS(1)
Print COS(0.5)
Print COS(-0.2)
Print COS(-1/2)

Useful Functions

' Place a useful function using this command here