Main content

### Course: Algebra (all content) > Unit 14

Lesson 6: Pythagorean identity# Use the Pythagorean identity

You might need: Calculator

## Problem

Stuck?

Stuck?

If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

You might need: Calculator

Stuck?

Stuck?