Resolved Field Of View For Enemy not working

I used a video by code monkey to implement pathfinding in my game. It is the one for backstabs.

Code (CSharp):

1. if (Vector3.Distance(transform.position, player.position) < playerNoticeDistance && dot > 1 - noticeDotOffset)
2. {
3.      head.LookAt(player);
4. }

The problem is that it doesn't work if my enemy is rotated at a different angle and I am not sure how to account for it.

 

nvm