Side panels on stools look great with a taper in the front and back, but cutting both tapers so they are the same profile can be frustrating. George Vondriska shows you how to build a taper jig for cutting a double taper on the table saw. A WoodWorkers Guild of America (WWGOA) original video.
It is much simpler to just slide the cut off up until its point aligns with the bottom edge. This maintains the width of the piece and parallel sides so that the other taper can be cut accurately without having to worry about the width of the blade’s kerf. Of course, double sided tape should be used to secure the cut off. Euclidian geometry guarantees this will work :).
Not bad, but not precise. Overlooks the fact that this method overlooks the change in angle that will result due to the loss of the saw kerf. If one were to put the entire piece cut off alongside the main part, it would be obvious that if the piece lines up at the bottom, it is not going to line up at the top.