reset Line Renderer every second

im drawing an arc which shows me the rotation a gameobject will do. so for example im drawing it from 45° to 135°. Thats working with from/to at start. i would like to update this rotation while im rotating so for example redrawing the arc.

or is there a better way for drawing an arc around a gameobject and update it ? I tried to set the numPositions to 0 but it doesnt work.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class CircleDrawer : MonoBehaviour
 {
     public int segments;
     public float xradius;
     public float yradius;
     LineRenderer line;
 
 
 
     void Start()
     {
         line = gameObject.GetComponent<LineRenderer>();
         line.numPositions = segments + 1;
         line.useWorldSpace = false;
     }
 
     public void ResetLines() {
         line.numPositions = 0;
     }
 
     public void CreatePoints(int from, int to)
     {
         line.numPositions = segments + 1;
 
         float x;
         float y;
         float z = 0f;
 
         float angle = 20f;
 
         int amount = to - from;
 
         transform.localRotation = Quaternion.Euler(90, 160 + from, 0);
 
         for (int i = 0; i < (segments + 1); i++)
         {
             x = Mathf.Sin(Mathf.Deg2Rad * angle) * xradius;
             y = Mathf.Cos(Mathf.Deg2Rad * angle) * yradius;
 
             line.SetPosition(i, new Vector3(x, y, z));
 
             angle += (amount / segments);
         }
     }
 }