The Sin function takes an angle and returns the ratio of two sides of a right triangle. The ratio is the length of the side opposite the angle divided by the length of the hypotenuse. The result lies in the range -1 to 1.
The following example uses the Sin function to return the sine of an angle:
Dim MyAngle, MyCosecant MyAngle = 1.3 ' Define angle in radians. MyCosecant = 1 / Sin(MyAngle) ' Calculate cosecant.