We can therefore use the converse to check whether a triangle is right-angled or not. Therefore, by the converse of the theorem of Pythagoras, the triangle is right-angled since the longest side ...

In 2022, two high school students created a trigonometric proof of the Pythagorean Theorem ... Of course, plenty of proofs of this theorem exist, but very few use trigonometry to make their ...

It's long been claimed impossible to use trigonometry to prove what is ... are themselves based upon the truth of the ...