The Pythagorean theorem has never been easier to understand! Learn how to use it to solve any right triangle with clear examples and step-by-step explanations. Perfect for revision, exams, and ...

Here's the Isosceles Lemma: take an isosceles triangle (two of the sides have the same length) with no angle larger than 90 degrees. Label the sides as in the figure below.

In a new peer-reviewed study, Ne'Kiya Jackson and Calcea Johnson outlined 10 ways to solve the Pythagorean theorem using trigonometry, including a proof they discovered in high school.

Two New Orleans high school students have proven the Pythagorean Theorem using trigonometry without relying on circular reasoning. That should be impossible.

Louisiana High School Seniors Say They Discovered a New Proof for 2,000-Year-Old Math Theorem Calcea Johnson and Ne'Kiya Jackson believe they can prove the Pythagorean Theorem using trigonometry ...