Contents

# Contents

## Idea

In trigonometry, the tangent function is one of the basic trigonometric functions.

## Definition

The tangent function is the ratio of the sine and the cosine:

$\tan(x) = \frac{\sin(x)}{\cos(x)}$

## References

Last revised on May 10, 2019 at 11:07:36. See the history of this page for a list of all contributions to it.