AT&T 6300 Programmer's Manual page 459

Syntax
numexp
Remarks
Example
SIN
Function
Calculates the sine of the argument.
SIN( numexp )
is a numeric expression representing the angle in radians.
The SIN function is calculated in single
precision, unless "ID" is supplied in the
GWBASIC command line.
PRINT SIN [1.5]
See also the COS function in this chapter.
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