Check out Jane Street's excellent Academy of Math and Programming (AMP). https://bit.ly/sum-amp

Here are Andrew Taylors slides on "Rotation with three shears". I saw him give this talk at the MathsJam Gathering 2023. The proof is on page 4. https://github.andrewt.net/shears/

This is a nice introduction to the concept: https://cohost.org/tomforsyth/post/891823-rotation-with-three

Way more details on the maths behind rotating with shears here: https://www.ocf.berkeley.edu/~fricke/projects/israel/paeth/rotation_by_shearing.html

Oh dang my book: https://mathsgear.co.uk/collections/books/products/love-triangle-by-matt-parker-signed

Huge thanks to my Patreon supporters. They spin me right round, baby, right round, like a record, baby, right round^3. https://www.patreon.com/standupmaths

CORRECTIONS - None yet, let me know if you spot anything!

Filming by Alex Genn-Bash Editing by Dan Daniel Written and performed by Matt Parker Graphics by Matt Parker and Andrew Taylor Produced by Nicole Jacobus Music by Howard Carter Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/