# back()

> Unity's back axis (0, 0, -1).

## Definition

* **Type:** Method
* **Namespace:** [Unity.Mathematics](/engine/6000.6/script-reference/unity/mathematics.md)
* **Assembly:** UnityEngine.MathematicsModule

```csharp
public static float3 back()
```

### Returns

| Type                                                                  | Description    |
| --------------------------------------------------------------------- | -------------- |
| [float3](/engine/6000.6/script-reference/unity/mathematics/float3.md) | The back axis. |

### Remarks

Matches \<a href="[https://docs.unity3d.com/ScriptReference/Vector3-back.html"\&gt;https://docs.unity3d.com/ScriptReference/Vector3-back.html\&lt;/a](https://docs.unity3d.com/ScriptReference/Vector3-back.html"\&gt;https://docs.unity3d.com/ScriptReference/Vector3-back.html\&lt;/a)>