The **`numpy.tan()` method** in Python returns the tangent of a list of numbers. This is equal to **`numpy.sin(x) / numpy.cos(x)`**.

The visual representation of the tangent ($tan$) is as follows.


#    
## Syntax
```
numpy.tan(x, out=None)
```
## Input parameters
- **`x`**: This method takes an array of numbers as the input.
- **`out=None`**: This is an optional parameter in `numpy.tan()` function. This could be `ndarray`, `None`, or `tuple` of the `ndarray`. This parameter identifies a location where the solution is stored.

## Returns
This method returns a `ndarray` containing the tangent values of radian numbers from the input. The output may be scalar if the input is scalar.

## Code example

import numpy as np
# Creating an array
array = np.array([0, np.pi/2, np.pi])

#Calculating the tangent of the values
result = np.tan(array)

#Using the out parameter
new_result = np.array([0, np.pi/2, np.pi])
np.tan(array, out = new_result)

print("Tengant of values : ", result)
print("New Result array : ", new_result)

## Explanation
- Line 3: We create an array using the `np.array` method.
- Line 6: We calculate the tangent of the values in the `array`.
- Line 9: We create a new array.
- Line 10: We calculate the tangent values and store them in the `new_result` array using the `out` parameter. 

> **Note**: Providing the `out` parameter in `numpy.tan()` function stores the result in the `out` parameter and returns a reference to it.

What is numpy.tan() in Python?

Returns tangent of input array elements; output can be stored using the optional `out` parameter.