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Chapter 3: Problem 27

The __________ library function returns the square root of a number.

Short Answer

Expert verified
Answer: The library function that returns the square root of a number is `sqrt()` found in the `math` library. To use it, follow these steps: 1. Import the `math` library by writing `import math`. 2. Use the `sqrt()` function by calling `math.sqrt(number)`, where `number` is the value you want to find the square root of.

Step by step solution

01

Identify the library function

The library function that returns the square root of a number is `sqrt()` which can be found in the `math` library.
02

Import the library

In order to use the `sqrt()` function, one must first import the `math` library using the following line of code: ```python import math ```
03

Use the sqrt() function

After importing the `math` library, one can use the `sqrt()` function as follows: ```python number = 16 square_root = math.sqrt(number) print(square_root) ``` In this example, the `square_root` variable will be assigned the value 4, which is the square root of 16.

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