# Right triangles & trigonometry

## Pythagorean theorem

### Practice

Pythagorean theorem challengeGet 3 of 4 questions to level up!

## Introduction to the trigonometric ratios

### Practice

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

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

### Practice

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

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

### Practice

Solve for an angle in right trianglesGet 3 of 4 questions to level up!

## Modeling with right triangles

### Practice

Right triangle word problemsGet 3 of 4 questions to level up!

## Law of sines

### Practice

Solve triangles using the law of sinesGet 3 of 4 questions to level up!

## Law of cosines

### Practice

Solve triangles using the law of cosinesGet 3 of 4 questions to level up!

## Solving general triangles

### Practice

General triangle word problemsGet 3 of 4 questions to level up!

### 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.