Syntax: @SIN(X)
X = a numeric value expressed in radians
@SIN returns the sine of the angle X. To convert the argument from degrees to radians, use the @RADIANS function.
Examples:
@SIN(1) = 0.841470984
@SIN(-2) = -0.90929743
@SIN(@RADIANS(R5)) = 0.70710678, where R5 = 45