How to Use Excel COS Function in Office 365? – [with Examples]
Tags: excelcosfunctioninof, excelfunctions
Published: 2020-08-28 12:20:32

---
title: How to Use Excel COS Function in Office 365? – [with Examples]
published: true
date: 2020-08-28 07:01:03 UTC
tags: ExcelCOSFunctioninOf,ExcelFunctions
canonical_url: https://geekexcel.com/how-to-use-excel-cos-function-in-office-365-with-examples/
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## Excel COS Function:

![COS Function](https://eadn-wc04-371788.nxedge.io/cdn/wp-content/uploads/2020/08/COS-Function.png)<figcaption id="caption-attachment-12815">COS Function</figcaption>

In this article, you will understand the usage of **Excel COS Function in Office 365** with its syntax, explanation, and examples. Let’s see them below!! Get an official version of **MS Excel** from the following link: [https://www.microsoft.com/en-in/microsoft-365/excel](https://www.microsoft.com/en-in/microsoft-365/excel)



## **COS Function – Explanation:**

- This function **returns the** **Cosine value of the given (angle) radians**.
- To convert the degree value into radians, use **RADIANS(number)** function.
- For example, **RADIANS(0.525)** returns the **cosine value as 0.866**

## **Syntax:**

**=COS(number)**

### Argument Explanation:

**Number ** – The angle in radians to which you need to find the cosine value.

### Note:

- If the argument is a non-numeric value (letters and special characters) and then it returns **#VALUE!** Error.

## **Examples:**

Let’s see some examples to make it clear.

### Example 1:

- In this below image, you can see the degree values in **Column A** , its corresponding radians in **Column B.**
- To convert the degree values into radians, you need to use the following RADIANS Function and its syntax is:
- **=RADIANS(degree)**
- The output Cosine values are listed in **Column C**.

![Example 1](https://eadn-wc04-371788.nxedge.io/cdn/wp-content/uploads/2020/08/1-88.png)<figcaption id="caption-attachment-12810">Example 1</figcaption>

### Example 2:

- To convert the degrees into a Cosine value, use the below formulas.

**=COS(degree)\*PI()/180** or **=COS(RADIANS(degree))**

![Example 2](https://eadn-wc04-371788.nxedge.io/cdn/wp-content/uploads/2020/08/2-74.png)<figcaption id="caption-attachment-12812">Example 2</figcaption>

### Example 3:

- If the argument is a non-numeric value (letters and special characters) and then it returns **#VALUE!** Error.

![Example 3](https://eadn-wc04-371788.nxedge.io/cdn/wp-content/uploads/2020/08/3-48.png)<figcaption id="caption-attachment-12813">Example 3</figcaption>

Thus, from the above examples, you can clearly understand the **COS Function** in Excel.

## **Summary:**

In the above article, you can understand the usage of **Excel COS Function in Office 365** with its syntax, explanation, and examples. Drop your **feedback** in the comment section. Thanks for visiting **[Geek Excel.](https://geekexcel.com/)** Keep Learning!!

### Read Also:

- [How to Use Excel ROMAN Function in Office 365? – [with Examples]](https://geekexcel.com/how-to-use-excel-roman-function-in-office-365-with-examples/)
- [How to Use Excel ATAN Function in Office 365? – (with Examples)](https://geekexcel.com/how-to-use-excel-atan-function-in-office-365-with-examples/)