Commodore 128 System Manual page 333

EXAMPLES:
PRINT CHR$ (65) Prints the a character,
a
PRINT CHR$ (147) Clears the text screen.
COS
Return cosine for angle of X radians
COS(X)
This function returns the value of the cosine of X, where X is an
angle measured in radians.
EXAMPLE:
PRINT COS (
-1
DEC
Return decimal value of hexadecimal number string
DEC (hexadecimal-string)
This function returns the decimal value of hexadecimal-string.
EXAMPLE:
PRINT DEC (" D020")
53280
F$=" F":PRINT DEC(F$)
15
ERR$
Return the string describing an error condition
ERR$(N)
This function returns a string describing an error condition. Also
see system variables EL and ER and Appendix A for a list of
BASIC error messages.
)
tt
18-5