At his full-time job, Huzefa Kapadia spends about 60 hours a week helping Southern California high school students understand polynomials, radicals and quadratic functions. But globally, he’s more ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. 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.