All that fancy math and your back to my 26.6 x 2 =53.14 :laughing:Whups, I got so caught up in being a smartass that I actually did leave the last part out. The inside angle of the peak is 126.8º so the angle for the cut you are looking for would be the opposite side of the angle which is 180º minus 126.8º or 53.2º.
That or I have forgot all my maths.
Why he!! yes....Griz, that's funny. I literally was laying out my stair stringers with a framing square when this came up.
Can you use a framing square for more than stairs? :laughing: