Cutting angles into wood with a table saw is relatively easy. The hardest part of any angle cut is determining the proper angle. Once that angle is identified, the easiest part is cutting the angle. Despite what the measurement may be, there is truly no angle greater than 45 degrees, which is why table saws and mitre saws only adjust to that angle. Cutting a piece of wood to a measurement greater than 45 degrees requires adjusting how the wood is held in the saw, and doing some basic math.
Subtract 45 from the angle measurement to identify the proper angle to set. For example, for a 75-degree angle, set a 30-degree angle.
Adjust the angle of the table saw to the proper angle. Most table saws adjust using a knob or a release on the front of the tool.
Place the strip of wood onto the saw vertically. Place a scrap piece of wood adjacent to the wood positioned opposite to the blade.
Raise the height of the blade so that it will cut through the wood properly at the greater angle. The height is typically controlled by a rotating knob on the front of the machine.
Turn the machine on and push the wood through, using the proper safety tools included with the table saw.
Play around with the positioning of the wood to ensure that you are feeding the wood through to get the proper cut. If the width of the wood is larger than the height of the saw blade, you may want to use a band saw to cut the wood. Cut a scrap piece of wood to 45 degrees. Set the piece of wood onto the scrap piece, and adjust the table for the band saw to the angle measurement minus 45 to make the cut. Practice on scrap pieces to perfect the technique before attempting on a finish piece. The key to the angle cut is all in how the piece of wood is held when feeding it through the saw.