ArcSin (ASin)

This function is available only in the Formula Toolbox.

ArcSin expresses the sine function in radians from 0 to pi. For example, the ArcSin of 1 equals pi/2.

The sine function takes the selected chart value, converts it into radians, and calculates a sine value. For example, the sine value of 1090 is .13.

This value is calculated as follows:

1090/(2*pi) = 173.478                           Calculates the laps around the unit circle

.478 * (2*pi) = 3.00894                         Takes the leftover lap and converts it to radians

Sin(3.00894) radians = .132263954          Calculates the sine for the corresponding radians

Therefore,

ArcSin(.132263954) = 3.00894 radians

Example: ASin(@)