[Yandex Cloud documentation](../../index.md) > [Yandex DataLens](../index.md) > Calculated fields > Function reference > Mathematical functions > ATAN2

# ATAN2



#### Syntax {#syntax}


```
ATAN2( x, y )
```

#### Description {#description}
Returns the arctangent in radians for the specified coordinates `x` and `y`.

**Argument types:**
- `x` — `Fractional number | Integer`
- `y` — `Fractional number | Integer`


**Return type**: `Fractional number`

#### Example {#examples}

```
ATAN2(5, 7) = 0.62024
```


#### Data source support {#data-source-support}

`ClickHouse 21.8`, `Files`, `Google Sheets`, `Microsoft SQL Server 2017 (14.0)`, `MySQL 5.7`, `Oracle Database 12c (12.1)`, `PostgreSQL 9.3`, `Trino`, `Yandex Documents`, `YDB`.