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The geometry of the trigonometric functions [🎞️ pi.mathematica]

178,605 次观看 • 17 天前 •via X (Twitter)

5 条评论

berlin 的头像
berlin17 天前

The geometry of trigonometric functions ye kiya hi comment me bta ho

Lexi 💕 的头像
Lexi 💕17 天前

i like this account

The Unexplained Files 的头像
The Unexplained Files17 天前

Ptolemy's Almagest, Book I chapter 11, tabulates every half-degree chord in a circle of diameter 120, and the 1515 printing gives the half-degree chord as 0 31 25 (Wikimedia Commons).

Rick 🇺🇸 的头像
Rick 🇺🇸17 天前

Beautiful: the rotating radius and its projections make sine and cosine feel inevitable. It’s a modern animation of the old chord method—later recast as sine tables in Indian astronomy—and the same circular-motion idea that underlies Fourier analysis.

berlin 的头像
berlin17 天前

Mja khara hi

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