Uploaded March 2026 | Updated September 2026, 2 weeks ago

---

Pi From Three Arctangents

This is a short, we show a wonderful way to see that pi is the sum of three arctangents: the arctangent of 1, 2 and 3.

If you like this video, consider subscribing to the channel or consider buying me a coffee: buymeacoffee.com/VisualProofs. Thanks!

Also, check out my playlist on Pi:
youtube.com/playlist?list=PLZh9gzIvXQUsGRDvzvXc02lDIKHaVeFwq&si=9YdPTM5O_WT2o1KN

This animation is based on a proof by Edward M. Harris from the March 1987 issue of The College Mathematics Journal : jstor.org/stable/2686505 , page 141

​#math​ #pi​ #manim​ #trigonometry #proofwithoutwords

To learn more about animating with manim, check out:
https://manim.community