If you’ve ever heard the phrase “the music of the spheres,” your first thought probably wasn’t about mathematics. But in its historical origin, the music of the spheres actually was all about math. In ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Use Pythagoras’ theorem to show a triangle is right-angled or to find one side of a right-angled triangle when two sides are known. Make sure you are confident at substituting into and manipulating ...