Returns the angle in degrees between two rotations a and b.

	// Calculates the angle (degrees) between
	// the rotation of this transform and target.
	var target : Transform;
	
	function Update () {
		var angle : float = Quaternion.Angle(transform.rotation, target.rotation);
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public Transform target;
    void Update() {
        float angle = Quaternion.Angle(transform.rotation, target.rotation);
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public target as Transform

	def Update() as void:
		angle as float = Quaternion.Angle(transform.rotation, target.rotation)