Learn about three trigonometric ratios in similar right-angled triangles with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

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 ...

Two ancient Babylonian tablets show a list of Pythagorean triples dating back about 1,000 years before the Greek philosopher Pythagoras ever lived.; Babylonians used Pythagorean triples—a group ...

ALSO READ: 10 Logical Reasoning Topics for Effective Problem Solving Trigonometric Ratios: The heart of trigonometry lies in the ratios - sine (opposite/hypotenuse), cosine (adjacent/hypotenuse ...