Identity Detector

Trigonometry · Axiom Academy

Discover the secret: some equations are ALWAYS true, no matter what angle you test. Are you ready to become a mathematical detective? Let's test two mathematical statements. Input an angle (in degrees) and see if each statement is true or false at that angle. To prove something is an identity, you need to test it thoroughly. Try at least 5 different angles to see if this equation is always true. Now it's your turn! Test each equation below and determine: is it an identity (always true) or just an equation (sometimes true)?

This is the written version of the interactive lesson above. See the full Trigonometry course.