Everyone knows that A² + B² = C², but can you prove it? There are at least 88 ways to do it. Here’s my personal favorite. The Pythagorean Theorem is known by anyone who has taken basic geometry. In a ...

A high school teacher didn't expect a solution when she set a 2,000-year-old Pythagorean Theorem problem in front of her students. Then Calcea Johnson and Ne'Kiya Jackson stepped up to the challenge.

Trigonometric identities are powerful tools for simplifying complex equations in math and science. Three core groups—reciprocal, quotient, and Pythagorean—form the foundation. Effective strategies ...