Originally Posted by
bOsscO
Roofers gotchu covered (at least for a certain range)!
1. Are those Canadian degrees? Aren't they 10% bigger than American degrees? (Sorry sorry sorry.)
2. So if 45% is (according to this diagram) 12/12m, which is 100%, then I can I extrapolate arithmatically to 6/12 would be 50% and 22.5 degrees? Which is important at the lesser angles, the ones we typically encounter riding, i.e. 2/24 = 15% more or less or 9.2 degrees? Or is there some trigonometric factor that varies it from the strictly arithmatic?