Reply by LesB

You question leaves some unexplained perimeters. The wood is 3/4” by what and I’m not sure what “pretty good accuracy” is.
Also do you want a power tool or a hand tool. With a little practice just a protractor and simple hand saw saw is as inexpensive as you can get (probably $20 to $30) and with care you can get very close.
For inexpensive power equipment, I would recommend finding a used compound miter say on Craig’s list or E-bay.

House framers can be off a degree or two but fine furniture need to be made exactly.

re2156 is confused between a cut and a bevel.

-- Les B, Oregon