... the Formula Directoryto any step in any design sequence by typing in the Directory’s data entrypane the formula's access code, then 's' (for step), then the step’s number. For ... azimuths, in formula2Bc set âv=0and solve for T. Then, knowing L, D, and T,in2Bd solve for âh.2.B.1. Angle of IncidenceThe formula below allows one to compute the angle formed betweenthe ... above. When you arefinished with a formula, click CLOSE, and the formula window will disappearand you will return to the Formula Directory. You can also operate aFormula Window from the keyboard...