> ## Documentation Index
> Fetch the complete documentation index at: https://www.integrate.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ETL: ASIN

> Compute the arc sine (inverse sine) of a numeric value in radians. Use ASIN for trigonometric calculations in ETL data transformations.

## Description

Returns the arc sine of a number.

## Syntax

`ASIN(numeric_expression)`

## Examples

`ASIN(1)` returns π/2.

## Return value datatype

Double

## Impact of null value

If input is null, returns null.