COS function in Excel

What is COS function in Excel?

The COS function is one of the math functions of Excel.

It returns the cosine of an angle.

We can find this function in the Math&trig category of insert function Tab.

How to use COS function in excel

  1. Click on an empty cell (like F5 )
empty cell in excel

2. Click on the fx icon (or press shift+F3)

 fx icon in excel

3. In the insert function tab you will see all functions

insert function tab in excel

4. Select math and trig category

5. Select COS function

6. Then select ok

cos function in excel

7. In the function arguments Tab you will see COS function

8. In the Number section you can enter the angle in radians for which you want the cosine

9. You will see results in formula result at the end of function arguments Tab

How to use COS function in excel

Examples of COS function in excel

Example 1:

How to use COS function in excel

You can see examples of COS function below:

Examples of cos function in excel
cos(A2) ----->>>>answer is  -1

cos(A3) ----->>>>answer is  0.707

cos(A4) ----->>>>answer is   -1

cos(A5) ----->>>>answer is  0

cos(A6) ----->>>>answer is   1

What is the purpose of COS function?

It returns the cosine of an angle.

What is the Return value of COS function?

It returns a number.

How many arguments does COS function have?

This function has just 1 Argument.

The argument of COS function is number.

In the Number section you can enter the angle in radians for which you want the cosine

The argument of COS function is required and not optional.

COS(number) = number

Which version of excel supports COS function?

This function is available for all excel versions (2003-2019)

Errors in COS function

COS related functions

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