# How to Use Excel COT Function?

Excel is a spreadsheet program that is developed for WindowsMacAndroid, and iOS. It helps to perform calculations on your PC. The purpose of this software is to do complicated calculations which are difficult to do manually. If you want to get the cotangent of an angle in the worksheet, then we suggest you use the COT function.

This article describes the usage of Excel COT Function with its syntax, description, and examples. Get an official version of MS Excel from the following link:

https://www.microsoft.com/en-in/microsoft-365/excel

## COT – Mathematical Explanation

In Trigonometry, we use different ratios such as Sine, Cosine, tangent, cosecant, secant, and cotangent. Here we will learn the purpose of the COT function.

Usually, the COT function helps to find the ratio between the sides of the right-angled triangle.

We can also find the Cotangent value using the following two formulas. These are the most commonly used formulas in mathematics.

Info: If you want to understand how the COT function works mathematically, then you can refer to the mathsisfun website. On that page, they have given every mathematical calculation easily which will help you learn math as simply as possible.

## Description of COT Function

• It is one of the built-in functions in Microsoft Excel.
• This function returns the cotangent values (ratio) of the given (angle) radians.
• For example, RADIANS(0.52) returns the secant value as 1.732.

## Syntax

• Here, you will see the syntax of the COT function.
• To apply this function on your spreadsheet, you have to select a cell and enter the formula in the following format.
• Once you enter the formula, just click on the button to get the result.

=COT(number)

Argument Explanation

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

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

## Examples

Here, we come up with some examples to know how to use the COT function in the Excel spreadsheet.

• Initially, you have to open your Excel workbook on your PC and launch a worksheet that has data.
• For example, we have given the degree values in Column B, and their corresponding radians in Column C.
• Here, we will get the cotangent value of the given radians in Column E using the COT function.
• Then, you have to enter the formula in the cell as shown below to get the result.
• After entering the formula, you need to click the button to get the output, as shown below. You can drag down the cell to fill the remaining cells.

## Input that Causes Error

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