The ASIN function returns the trigonometric arcsine of a real number, in radians.

## Syntax

ASIN (x)

x is an INTENT(IN) scalar or array of type REAL and must be within the range
*i* ≤ 1

A REAL representation, expressed in radians, of the arcsine of x.

## Example

real :: x=.5 write(*,*) asin(x) ! writes .523599