# ASIN¶

The **ASIN** function calculates the arcsine, or inverse sine, (in radians) of the given value.

## Usage¶

`asin(num) : num`

## Examples¶

The following example creates a single NOR row with a column x that calculates the arcsine of 1.0 resulting in an answer of 1.5708 (which is 90° in radians).

```
NORROWS 1 | CALC x asin(1.0)
```