# Dot

> The dot product between two rotations.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

## Dot(Quaternion, Quaternion)

The dot product between two rotations.

```csharp
public static float Dot(Quaternion a, Quaternion b)
```

### Parameters

**** (\[Quaternion]\(/engine/6000.6/script-reference/unityengine/quaternion)): **** (\[Quaternion]\(/engine/6000.6/script-reference/unityengine/quaternion)): 

### Returns

| Type                                                          | Description |
| ------------------------------------------------------------- | ----------- |
| [float](https://learn.microsoft.com/dotnet/api/system.single) |             |

### Examples

```csharp
using UnityEngine;

public class Example : MonoBehaviour
{
    void Start()
    {
        print(Quaternion.Dot(transform.rotation, Quaternion.identity));
    }
}
```

## Dot(Quaternion, Quaternion)

The dot product between two rotations.

```csharp
public static float Dot(in Quaternion a, in Quaternion b)
```

### Parameters

**** (\[Quaternion]\(/engine/6000.6/script-reference/unityengine/quaternion)): **** (\[Quaternion]\(/engine/6000.6/script-reference/unityengine/quaternion)): 

### Returns

| Type                                                          | Description |
| ------------------------------------------------------------- | ----------- |
| [float](https://learn.microsoft.com/dotnet/api/system.single) |             |

### Examples

```csharp
using UnityEngine;

public class Example : MonoBehaviour
{
    void Start()
    {
        print(Quaternion.Dot(transform.rotation, Quaternion.identity));
    }
}
```