I have a 1" thick sheet (maybe plywood or solid wood or MDF) and I would like to cut a section out of the edge. This image shows the board, in green, in cross section:
The angle is 30/60 degrees. I'm considering trying to find a router bit that can accomplish this, or trying to use a table-saw dado blade at an angle. Are either of these the right approach? Should I be trying something else?