Solutions to Rafter at Fixed Ridge Line

Rafter to Fixed Ridge Pitch Angle: Trigonometric Solution Diagram
Rafter to Fixed Ridge Pitch Angle: Trigonometric Solution
Rafter to Fixed Ridge Pitch Angle: Trigonometric Formulas and Geometry
Solution of Slope using Intersecting Circles
Diagram: Rafter to Fixed Ridge Pitch Angle Arccos Formula
Page 1: Solution of Rafter to Fixed Ridge Pitch Angle Arccos Formula
Page 2: Solution of Rafter to Fixed Ridge Pitch Angle Arccos Formula
Arctan and Arcsin Formulas
Slope (Tangent) Formula
Slope (Tangent) Formula expressed in terms of Rise and Run
Formula for Tangent to Circle from External Point
Solution of Rafter Depth given Heel Height and Plate Width
Solution of Rafter Depth given Heel Height/Plumb Cut Depth Ratio and Plate Width
Solution of Rafter Depth given Heel Height/Plumb Cut Depth Ratio and Plate Width
Diagram of Rafter passing through Critical Points
Geometric Construction of Tangent Circle from External Point
Geometry: Tangent to Circle from External Point
Supplementary: Tangent to Ellipse from External Point

Geometry: Tangent to Ellipse from External Point
Algebra: Tangent to Ellipse from External Point

Joe Bartok