Trèteaux Angles: PSBm-DP
PSBm-DP = Prism Footprint Saw Blade Bevel Angle Along side of Hip Rafter Rotated into the Roof Surface Plane at Foot Of Hip Rafter

The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.