The Prostaphaeretic Multiplier David B. Sher and Dean Nataro Mat/Sta/CMP Dept. Nassau Community College sherd@polar.sunynassau.edu natarod@nov1.sunynassau.edu
Prostaphaeresis Introduction
Prostaphaeretic Formulae
Late 16th Century
Multiplication
Division
Using Cos to Multiply
Similar triangles
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