MATLAB Function Reference |

Inverse sine, result in radians

**Syntax**

**Description**

```
Y = asin(X)
```

returns the inverse sine (arcsine) for each element of `X`

. For real elements of `X`

in the domain , `asin(X)`

is in the range . For real elements of `x`

outside the range , `asin(X)`

is complex.

The `asin`

function operates element-wise on arrays. The function's domains and ranges include complex values. All angles are in radians.

**Examples**

Graph the inverse sine function over the domain .

**Definition**

The inverse sine can be defined as

**Algorithm**

`asin`

uses FDLIBM, which was developed at SunSoft, a Sun Microsystems, Inc. business, by Kwok C. Ng, and others. For information about FDLIBM, see http://www.netlib.org.

**See Also**

asech | asind |

© 1994-2005 The MathWorks, Inc.