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

Learn

Practice

Trigonometric ratios in right trianglesGet 3 of 4 questions to level up!

Solve for a side in right trianglesGet 3 of 4 questions to level up!

Find trigonometric ratios using the Pythagorean theoremGet 3 of 4 questions to level up!

Learn

Practice

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!

Level up on the above skills and collect up to 500 Mastery points

Learn

Practice

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!

Learn

Practice

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!

Level up on the above skills and collect up to 500 Mastery points

Learn

Practice

Evaluating expressions using basic trigonometric identitiesGet 3 of 4 questions to level up!

Trigonometric identities challenge problemsGet 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 1200 Mastery points!