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

# Atan

Computes the arctangent of the given angle

**Category:** `math`

**Syntax:**

```
Atan([value])
```

**Returns:** `Float`

**Context Filtering:** ✓ Yes

## Parameters

| Name    | Type               | Required | Description                                   |
| ------- | ------------------ | -------- | --------------------------------------------- |
| `value` | `number or column` | ✓ Yes    | The value whose arctangent will be calculated |

**Allowed Column Types for `value`:** INT, FLOAT, DECIMAL

## Validation

* Minimum parameters: 1
* Maximum parameters: 1

## Examples

```
Atan([Tangent Value])
```

Calculates the arctangent for each value in the Tangent Value column

```
Atan(0)
```

Returns the arctangent of 0
**Result:** `0`