# angle(quaternion, quaternion)

> Returns the angle in radians between two unit quaternions.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Mathematics](/engine/6000.7/script-reference/unity/mathematics.md)
* **Assembly:** UnityEngine.MathematicsModule

```csharp
public static float angle(quaternion q1, quaternion q2)
```

### Parameters

**** (\[quaternion]\(/engine/6000.7/script-reference/unity/mathematics/quaternion)): The first quaternion.**** (\[quaternion]\(/engine/6000.7/script-reference/unity/mathematics/quaternion)): The second quaternion.

### Returns

| Type                                                          | Description                             |
| ------------------------------------------------------------- | --------------------------------------- |
| [float](https://learn.microsoft.com/dotnet/api/system.single) | The angle between two unit quaternions. |