# Find square root of negative number using python

## ðŸ“‹ Table Of Content

In this article, we will learn how to find the square root of a negative number using python.

To find the square root of a negative number we have to use complex numbers. In python, we have the `cmath` that provides us with various mathematical functions to work with complex numbers.

## Square root of a negative number in Python

To work with complex numbers we can use the `cmath` library of python. And to get the square of a negative number we can use the `cmath.sqrt()` method from cmath library.

Example:

``````import cmath

number = -5

negative_sq_val = cmath.sqrt(number)

print(negative_sq_val)
``````

Output:

``````2.23606797749979j
``````

Here, in this example, we have imported the cmath module and then passed the negative number to the `sqrt()` method.

The `cmath.sqrt()` method performs the mathematical operations to find the square root and returns the number.

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