# ACOS

## Y ## What is the ACOS Function in Power BI DAX?

The ACOS function is a mathematical function that returns the arccosine of a number. The arccosine is the inverse cosine function, which means it returns the angle whose cosine is the given number. The ACOS function takes a single argument and returns a decimal number between 0 and pi.

## How to Use the ACOS Function in Power BI DAX?

The syntax for the ACOS function in Power BI DAX is as follows:

``` ACOS(number) ```

The number argument is the cosine value for which you want to find the arccosine. The ACOS function will return a decimal value representing the angle in radians.

Let’s take an example to understand this better. Suppose we have a table with a column named “Cosine” that contains the cosine values for different angles. To find the arccosine values for these angles, we can use the ACOS function in the following way:

``` Arccosine = ACOS(Table1[Cosine]) ```

In this example, “Table1” is the name of the table that contains the “Cosine” column. The ACOS function will return the arccosine values for each cosine value in the “Cosine” column.

## Examples of Using the ACOS Function in Power BI DAX

Let’s look at some examples of how to use the ACOS function in Power BI DAX.

### Example 1: Finding the Arccosine of a Specific Cosine Value

Suppose we want to find the arccosine of a specific cosine value, say 0.5. We can use the ACOS function in the following way:

``` Arccosine = ACOS(0.5) ```

The ACOS function will return the arccosine value for the cosine value 0.5, which is 1.0471975511966 radians.

### Example 2: Finding the Arccosine Values for a Column of Cosine Values

Suppose we have a table with a column named “Cosine” that contains the cosine values for different angles. To find the arccosine values for these angles, we can use the ACOS function in the following way:

``` Arccosine = ACOS(Table1[Cosine]) ```

The ACOS function will return the arccosine values for each cosine value in the “Cosine” column.

### Example 3: Finding the Angle in Degrees for a Column of Cosine Values

Suppose we have a table with a column named “Cosine” that contains the cosine values for different angles. To find the angle in degrees for each cosine value, we can use the ACOS function in the following way:

``` Angle = ACOS(Table1[Cosine]) * (180 / PI()) ```

The ACOS function will return the arccosine values in radians, which we need to convert to degrees. To convert radians to degrees, we multiply the arccosine value by 180 divided by pi.

The ACOS function in Power BI DAX is a useful tool for finding the arccosine of a number. It can be used to calculate angles and perform other mathematical calculations in tables and columns. Hopefully, this article has helped you understand how to use the ACOS function in Power BI DAX and given you some examples to get started.

Subject