# Python 3 - Number tan() Method

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## Description

The tan() method returns the tangent of x radians.

## Syntax

Following is the syntax for tan() method −

```tan(x)
```

Note − This function is not accessible directly, so we need to import math module and then we need to call this function using math static object.

## Parameters

x − This must be a numeric value.

## Return Value

This method returns a numeric value between -1 and 1, which represents the tangent of the parameter x.

## Example

The following example shows the usage of tan() method.

```#!/usr/bin/python3
import math

print ("(tan(3) : ",  math.tan(3))
print ("tan(-3) : ",  math.tan(-3))
print ("tan(0) : ",  math.tan(0))
print ("tan(math.pi) : ",  math.tan(math.pi))
print ("tan(math.pi/2) : ",  math.tan(math.pi/2))
print ("tan(math.pi/4) : ",  math.tan(math.pi/4))
```

## Output

When we run the above program, it produces the following result −

```(tan(3) :  -0.1425465430742778
tan(-3) :  0.1425465430742778
tan(0) :  0.0
tan(math.pi) :  -1.2246467991473532e-16
tan(math.pi/2) :  1.633123935319537e+16
tan(math.pi/4) :  0.9999999999999999
```
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