RayCast offset rotation 20 degrees

Hi,

How would I rotate a RayCast 20 degrees off the axis of the gameObject?

Thanks.

 // Check to see if there is anything between the Terrorist and the Player 
 if (Physics.Raycast(transform.position + Vector3(0, 1, 0), transform.forward, hit)){ // Vector3 lifts the Ray off the floor 1mt
  Debug.DrawLine (transform.position + Vector3(0, 1, 0), hit.point, Color.red);
  print(hit.collider.gameObject.name);
  
 if(hit.collider.gameObject.tag == "Player"){
  globalVars.GetComponent(GlobalVars).playerBeingHit = true;
 }
  else globalVars.GetComponent(GlobalVars).playerBeingHit = false;
  }