When pruning a branch, it's generally recommended to make a "bark collar cut" or "branch collar cut." The angle for this type of cut is typically made just outside the branch collar, which is the swollen area where the branch meets the trunk or another branch. The cut should be at a slight angle, sloping away from the trunk or parent branch. The specific angle may vary, but a general guideline is to make the cut at approximately a 45-degree angle.