# Trigonometry with right triangles

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Lessons

Introduction to the trigonometric ratiosSolving for a side in a right triangle using the trigonometric ratiosSolving for an angle in a right triangle using the trigonometric ratiosModeling with right trianglesQuizTrigonometric ratios and similaritySine and cosine of complementary anglesTrigonometric ratios of special trianglesIntroduction to the Pythagorean trigonometric identityThe reciprocal trigonometric ratiosUnit testPractice

Quiz

Unit test

Test your understanding of

**Trigonometry with right triangles**with these 10 questions.About this unit

Learn the basics of trigonometry: What are sine, cosine, and tangent? How can we use them to solve for unknown sides and angles in right triangles?