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 ...

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 ...

An understanding of how to use Pythagoras’ theorem to find missing sides in a right-angled triangle is essential for applying the theorem in different contexts. (3,1) is the coordinate that is 3 along ...

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Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. OK, so I've been learning about Pythagoras, and the dirt on him is just too good. You've probably heard ...