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

- Reciprocal trig ratiosGet 5 of 7 questions to level up!
- Evaluating expressions involving trigonometric ratios of an angle when one ratio is givenGet 3 of 4 questions to level up!

- Trigonometric ratios of special anglesGet 3 of 4 questions to level up!
- Special right trianglesGet 3 of 4 questions to level up!
- Evaluating expressions of trigonometric ratios for some special anglesGet 3 of 4 questions to level up!

- Evaluating trigonometric ratios of complementary anglesGet 3 of 4 questions to level up!
- Solving trigonometric equations having complementary anglesGet 3 of 4 questions to level up!

- Evaluating expressions using basic trigonometric identitiesGet 3 of 4 questions to level up!
- Trigonometric identities challenge problemsGet 3 of 4 questions to level up!

- Word problems: one triangle involvedGet 3 of 4 questions to level up!

Up next for you:#### Unit test

Level up on all the skills in this unit and collect up to 1100 Mastery points!