---
title: "tan"
description: "Returns the trigonometric tangent of a number"
---

# tan

> Returns the trigonometric tangent of a number

**This function is used by Ignition's Expression language.**
## Description
Returns the trigonometric tangent of a number, which is interpreted as an angle expressed in radians. The results will be a floating point value.

## Syntax
`tan(number)`

### Parameters

| Type | Parameter | Description |
|---|---|---|
| Integer/Float | `number` | The number to get the tangent of. |

### Results
**Float** - The tangent of the number provided.

## Examples
```python title="Code Snippet"
 tan(1.89) //returns -3.026
```