Notes
Pythagoras

Pythagorean Identity

The Pythagorean Identity, also known as Pythagoras’ Theorem, relates the lengths of the sides of a right-angled triangle. In a right-angled triangle with sides of length $a$ , $b$ , and $c$ , with $c$ the hypotenuse then the following holds:

a^2 + b^2 = c^2

This generalises to the cosine rule which holds for all triangles.

Revised on March 6, 2022 11:35:18 by Andrew Stacey

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