# Converting VBScript's Tan Function

**Definition**: Returns the tangent of an angle.

### Tan

Good point: Windows PowerShell wouldn’t be much of a scripting language if it allowed you to calculate arctangents but *didn't* allow you to calculate tangents. Fortunately, that's not the case: you can determine the tangent of an angle by using the System.Math class and calling the **Tan** method. Here’s a command that calculates the tangent of a 45-degree angle and then stores that value in the variable $a:

```
$a = [math]::tan(45)
```

When you run this command and then echo back the value of $a you should get the following:

```
1.61977519054386
```