By using the Law of Sines, ... using sine and cosine to independently prove the Pythagorean Theorem without relying on sin²α + cos²α = 1. But regardless of these previous attempts, ...

It was previously believed that trigonometry, using sine, cosine, or tangent, to verify Pythagoras’ theorem (a2 + b2 = c2) was thought to be an ultimately cyclical argument as the former is ...

At an American Mathematical Society meeting, high school students presented a proof of the Pythagorean theorem that used trigonometry—an approach that some once considered impossible ...

Jackson and Johnson came up with their "impossible" proof in answer to a bonus question in a school math contest. They presented their work at an American Mathematical Society meeting in 2023, but ...

Two Black students continue to showcase their prowess in math. The young women from Louisiana have found nine more solutions to the Pythagorean theorem after discovering proof to the problem in a ...

Ne'Kiya Jackson and Calcea Johnson, former St. Mary's Academy students, published their proofs in the American Mathematical Monthly.

National 5; Using the sine and cosine rules to find a side or angle in a triangle The sine rule. The sine rule can be used to find an angle from 3 sides and an angle, or a side from 3 angles and a ...