# ASN


## Syntax

```
ASN(numericExpression)
```

## Description

Returns the arc sine value of the given argument.
Argument must be a numeric expression. Returned value type is [float](types.md#Float).

## Examples

```
REM Arc sine value
PRINT "Arc Sine value of a is "; ASN(a)
```


## Remarks

*  This function is 100% Sinclair BASIC Compatible
*  If the given argument type is not float, it will be [converted](cast.md) to float before operating with it.

## See also

* [COS](cos.md) and [ACS](acs.md)
* [TAN](tan.md) and [ATN](atn.md)
* [SIN](sin.md)
