Python cos() is an inbuilt method defined under the math module, which is used to find the cosine value of the parameter passed in radians.

Python cos() is an inbuilt method defined under the math module, which is used to find the cosine value of the parameter passed in radians. We can use the math module by importing it. The syntax for it would be **import math; after** importing, we use to call this function using the static object.

The math.cos() function returns the cosine of the value passed as an argument. The value passed in the cos() function should be in radians. The **Math**.**cos()** method returns the numeric value between -1 and 1, which represents the **cosine** of the angle given in radians. The **cos()** is the static method of **Math; therefore**, it is always used as **Math**.

`math.cos(var)`

In this tutorial, you’re going to learn a variety of Python tricks that you can use to write your Python code in a more readable and efficient way like a pro.

Today you're going to learn how to use Python programming in a way that can ultimately save a lot of space on your drive by removing all the duplicates. We gonna use Python OS remove( ) method to remove the duplicates on our drive. Well, that's simple you just call remove ( ) with a parameter of the name of the file you wanna remove done.

In the programming world, Data types play an important role. Each Variable is stored in different data types and responsible for various functions. Python had two different objects, and They are mutable and immutable objects.

Magic Methods are the special methods which gives us the ability to access built in syntactical features such as ‘<’, ‘>’, ‘==’, ‘+’ etc.. You must have worked with such methods without knowing them to be as magic methods. Magic methods can be identified with their names which start with __ and ends with __ like __init__, __call__, __str__ etc. These methods are also called Dunder Methods, because of their name starting and ending with Double Underscore (Dunder).

The OS module is a python module that provides the interface for interacting with the underlying operating system that Python is running.