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Unit: Trigonometry

Special right triangles

Learn

Practice

Introduction to the trigonometric ratios

Learn

Practice

Solving for a side in a right triangle using the trigonometric ratios

Learn

Practice

Solving for an angle in a right triangle using the trigonometric ratios

Learn

Practice

Modeling with right triangles

Learn

Practice

Trigonometric ratios and similarity

Learn

Sine and cosine of complementary angles

Learn

The reciprocal trigonometric ratios

Learn

Practice

Quiz 1

Identify your areas for growth in these lessons:
Special right triangles
Introduction to the trigonometric ratios
Solving for a side in a right triangle using the trigonometric ratios
Solving for an angle in a right triangle using the trigonometric ratios
Modeling with right triangles
See 3 more

The law of sines

Learn

Practice

The law of cosines

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Practice

Solving general triangles

Learn

Practice

Quiz 2

Identify your areas for growth in these lessons:
The law of sines
The law of cosines
Solving general triangles

Unit test

Test your understanding of Trigonometry with these 9 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.