OpenOffice3.org Calc 3. Mathematical Functions
SIN(number) Function
Calculates the sine of the argument “number”.
Returns a numeric value greater than or equal to -1 and less than or equal to 1.
Accepts exactly one argument. The argument “number” contains a numeric value,
which represents the angle in radians. The sine is a continuo's function,
therefore, the argument can take any numerical value positive, negative or zero.
For example:
=SIN(0) Returns 0.
=SIN(PI()) Returns 0.
=SIN(PI()/2) Returns 1.