#
Fortran Wiki

asin

## Description

`asin(x)`

computes the arcsine of its `x`

(inverse of `sin(x)`

).

## Standard

FORTRAN 77 and later

## Class

Elemental function

## Syntax

`result = asin(x)`

## Arguments

`x`

- The type shall be `real`

, and a magnitude that is less than one.

## Return value

The return value is of type `real`

and it lies in the range $-\pi /2\le asin(x)\le \pi /2$. The kind type parameter is the same as `x`

.

## Example

```
program test_asin
real(8) :: x = 0.866_8
x = asin(x)
end program test_asin
```

## See also

Inverse function: sin

Revised on April 30, 2009 20:19:47
by

Jason Blevins
(71.70.142.190)
(651 characters / 0.0 pages)