# Trigonometry

# Unlock your personalized study plan

Take Quiz 1 to identify your areas for growth. We'll recommend lessons for exactly what you need to learn.

Lessons

Special right trianglesQuiz 1Introduction 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 trianglesTrigonometric ratios and similaritySine and cosine of complementary anglesThe reciprocal trigonometric ratiosQuiz 2The law of sinesThe law of cosinesSolving general trianglesQuiz 3Unit testPractice

Quizzes

Unit test

Learn

Practice

Special right triangles

7 questions

Practice

Identify your areas for growth in these lessons:

Practice

General triangle word problems

4 questions

Practice

Identify your areas for growth in these lessons:

Test your understanding of

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

Triangles are not always right (although they are never wrong), but when they are it opens up an exciting world of possibilities. Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.