Where Do Pythagorean Identities Come from?

Pythagorean identities are formulas, derived from Pythagorean Theorem, that allow us to find out where a point is on the unit circle.

Where does the Pythagorean identity come from?

This identity comes from looking at the unit circle. All the right triangles formed by the unit circle will have a hypotenuse of 1.

What is the Pythagorean identity and where does it come from?

The Pythagorean Identity relates the sides of the right triangle together using only the angle of the right triangle. The identity is part of the collection of Trigonometric Identities and can be derived using pythagorean's theorem and the properties of the unit circle.