RelativPos

using UnityEngine;
using System.Collections;

public class DrawRelativePos : MonoBehaviour
{
    public Rigidbody2D playerRigidBody;
    public Rigidbody2D objectRigidBody;

    Rigidbody2D rig;

    // Use this for initialization
    void Start()
    {
        rig = this.GetComponent<Rigidbody2D>();
    }

    // Update is called once per frame
    void Update()
    {
        float angle = GetAngleToPlayer();
        rig.MoveRotation(angle);
        string str = "angle: " + angle;
        print(str);
    }

   float GetDistanceToPlayer()
    {
        float dist = Vector2.Distance(playerRigidBody.transform.position, objectRigidBody.transform.position);
        return dist;
    }

    float GetAngleToPlayer()
    {
        float angle = Vector2.Angle(playerRigidBody.transform.position, objectRigidBody.transform.position);
        return angle;
    }
}