14: Appendices Last updated Jan 30, 2021 Save as PDF 13.4: Electrodynamic-acoustic devices 14.1: Numerical Constants Page ID25046 David H. StaelinMassachusetts Institute of Technology via MIT OpenCourseWare ( \newcommand{\kernel}{\mathrm{null}\,}\) 14.1: Numerical Constants14.2: Complex Numbers and Sinusoidal Representation14.3: Mathematical Identities14.4: Basic Equations for Electromagnetics and Applications14.5: Frequently Used Trigonometric and Calculus Expressions