For the Hitter using the Angle of Approach procedure, the 'old' Plane Angle with its Straight Line Baseline is gone. It served its purpose by locating the Stroke's Impact Point and Low Point. Through these two points passes its derivative -- the Straight Line Angle of Approach Delivery Line. This Visual Equivalent thus determined, the original Plane ceases to exist (2-J-3).
The Hitter with his Clubhead now Covers -- not Traces or 'points at' -- this new Delivery Line. And whatever Inclined Plane the Sweetspot must utilize to make this journey is now the Inclined Plane of the Stroke.