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
Excel function: SIN