Main content

# The unit circle definition of trigonometric function

Using the unit circle to extend the SOH CAH TOA definition of the basic trigonometric functions.

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

Using the unit circle to extend the SOH CAH TOA definition of the basic trigonometric functions.