RTS Camera not working as expected

I'm having a problem with the RTS camera I'm making:

It's supposed to offer rotation using q/e and then move based upon the rotation.

However, it's only moving along one axis and the angle isn't working at all.

 using UnityEngine;
 using System.Collections;
 
 public class MovementCamera : MonoBehaviour {
     
     #region runtimevariables
     
     private float mouseX;
     private float mouseY;
     private int screenWidth;
     private int screenHeight;
     
     private Vector2 cameraPosition;
     public float Angle;
     
     #endregion
     
     // Settings
     public int ScrollDistance = 100;
     public float MovementSpeed = 5;
     
     // Initalize
     void Start() {
         cameraPosition = new Vector2();    
         Angle = 0;
     }
     
     // TODO: 
     //            --> Smooth dragcamera
     //             --> Add height based upon wheel (sin-curve)
     void LateUpdate () {
         mouseX = Input.mousePosition.x;
         mouseY = Input.mousePosition.y;
         screenWidth = Screen.width;
         screenHeight = Screen.height;
         
         float xRate = 0.0f;
         float yRate = 0.0f;
         
         if (ScrollDistance >= mouseX)
             xRate = -(1 - (mouseX / ScrollDistance));
         else if (mouseX >= screenWidth - ScrollDistance)
             xRate = (mouseX - screenWidth + ScrollDistance) / ScrollDistance;
 
         if (ScrollDistance >= mouseY)
             yRate = -(1 - (mouseY / ScrollDistance));
         else if (mouseY >= screenHeight - ScrollDistance)
             yRate = (mouseY - screenHeight + ScrollDistance) / ScrollDistance;
 
         float yMovement = Mathf.Min (yRate + Input.GetAxis ("Vertical"), 1) * Time.deltaTime * MovementSpeed;
         float xMovement = Mathf.Min (xRate + Input.GetAxis ("Horizontal"), 1) * Time.deltaTime * MovementSpeed;
         Angle += ((Input.GetKey (KeyCode.Q) ? 1 : 0) - (Input.GetKey (KeyCode.E) ? 1 : 0) * Time.deltaTime);
         
         Vector3 newPosition = new Vector3(
             cameraPosition.x + xMovement * Mathf.Cos (Angle * Mathf.Deg2Rad) - yMovement * Mathf.Sin (Angle * Mathf.Deg2Rad),
             5,
             cameraPosition.y + xMovement * Mathf.Sin (Angle * Mathf.Deg2Rad) + yMovement * Mathf.Cos (Angle * Mathf.Deg2Rad)
         );
         
         cameraPosition.x = newPosition.x;
         cameraPosition.y = newPosition.y;
         
         transform.position = newPosition;
     }
 }