On: New Orleans teenagers found a new proof of the Pythagorean Theorem

[maxk42]

On my phone at a restaurant right now so I'm not looking it up but this was previously in a published paper in 2009. Not to rain on their parade: this is a great start for a couple of math prodigies, but they didn't quite discover a new proof.

[nolamark → maxk42]

perhaps: https://forumgeom.fau.edu/FG2009volume9/FG200925.pdf

On the Possibility of Trigonometric Proofs of the Pythagorean Theorem

Jason Zimba

Abstract. The identity cos2 x + sin2 x = 1 can be derived independently of the Pythagorean theorem, despite common beliefs to the contrary.

[ummonk → maxk42]

If you had bothered to read the article before commenting you'd see that the proof is indeed novel, and is unrelated to the previously found trigonometric proof.

[hgsgm → maxk42]

No, that was a different proof using different trigonometry.