Excel

## How do you use COS in Excel?

COS is used in Excel to calculate the cosine of a given angle. The COS function takes one argument, the angle in radians, and returns the cosine of that angle. The COS function can be used in a number of different ways, including in the form of a VBA function.

## What is the syntax of COS in Excel?

The syntax of COS in Excel is as follows:

=COS(angle)

Where angle is the angle in radians that you want to calculate the cosine of.

## What is an example of how to use COS in Excel?

There are many ways to use COS in Excel. One way is to use it in a VLOOKUP function. For example, if you want to find the cosine of 30 degrees, you can use the following formula: =COS(30). Another way to use COS is in a SUMIF function. For example, if you want to find the sum of all the values in a column that are cosine values, you can use the following formula: =SUMIF(B:B, ">=COS(0)", "B:B").

## When should you not use COS in Excel?

There are a few instances in which you should not use the COS function in Excel. One such instance is when you are trying to find the cosine of a negative number. Additionally, if you are trying to find the cosine of a number that is greater than or equal to 1, the COS function will return an incorrect result.

## What are some similar formulae to COS in Excel?

The Excel formulae COS, SIN, and TAN all compute trigonometric functions. COS computes the cosine of a number, SIN computes the sine of a number, and TAN computes the tangent of a number.

### Excel

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