To calculate the trigonometric sine of x, in radians.
SIN(x) is calculated in single-precision unless the /d switch is used when GW-BASIC is executed.
To obtain SIN(x) when x is in degrees, use SIN(x*π/180).
PRINT SIN(1.5) .9974951
The sine of 1.5 radians is .9974951 (single-precision).