Rheticus and 17th Century Trig Tables - WildTrig: Intro to Rational Trigonometry - N J Wildberger

Explore the historical significance of trigonometric tables in this 28-minute video lecture from the WildTrig: Intro to Rational Trigonometry series. Delve into the work of Rheticus, whose contributions shaped 17th-century trigonometry tables, and understand how these tables formed the foundation of classical trigonometry for two millennia. Discover the often-overlooked importance of circular function values for different angles in Greek, Hindu, Arabic, Chinese, and European mathematics. Learn about double angle formulas, half angle formulas, and triple angle formulas, as well as techniques for combining values. Gain insights into a crucial aspect of trigonometry that is frequently neglected in modern mathematics education.

Introduction
History of trigonometry
Rheticus
Double angle formulas
Half angle formulas
Combining values
Triple angle formulas