ASIN Function

The ASIN function returns a numeric value in radians that approximates the arcsine of argument-1. The type of this function is numeric.

Usage

FUNCTION ASIN (argument-1)

Parameters

  1. argument-1 must be class numeric.
  2. The value of argument-1 must be greater than or equal to -1 and less than or equal to +1.
Note: This function will produce results accurate to only about 17 digits, even when argument-1 contains more than 18 digits (for example, if you have compiled your program for 31-digit support.)

Returned Value

The returned value is the approximation of the arcsine of argument-1 and is greater than or equal to -pi/2 and less than or equal to +pi/2.