Main content

### Course: Trigonometry > Unit 1

Lesson 1: Ratios in right triangles# Use ratios in right triangles

You might need: Calculator

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