Trigonometric identities are powerful tools for simplifying complex equations in math and science. Three core ...

By using the Law of Sines, and avoiding the Pythagorean theorem’s trig identity ... Experts Wrote a Proof for a 100-Year-Old Problem. A 4chan Post Prompted a Wild Mathematical Puzzle.

Two US college students, who discovered a new way to prove Pythagoras' famous 2,000-year-old theorem in 2022 have now come up with five different ways of solving the problem using trigonometry.

Two high school seniors have presented their proof of the Pythagorean theorem using trigonometry — which mathematicians thought to be impossible — at an American Mathematical Society meeting.