How to use the RADIANS Function in Excel

In this article, we will learn about how to use the RADIANS function in Excel.

The radius of a circle is one-half of the distance across its center which makes an angle equal to 3.14159 radians. A degree is equal to 180 RADIANS because a whole circle is 360 DEGREES and is equal to two pi radians.

180 DEGREES = ? radian= 3.14159 radians
1 degree = (?/ 180) = (3.14159/180) radians
1 degree = 0.017453 radians
The PI function in excel returns the value of which is approximately 3.14159...

The RADIANS function takes value of angle in degrees and returns the angle in radians.
Syntax:

=RADIANS (angle)

angle : angle in degrees

As you can see, it proves the equation we stated above. The conversion of degree to radian is done using the RADIANS function in excel.
Now let’s get this function via running it on some examples.

Here we have some values as angle in radians and needs to get the angle in RADIANS
Use the formula:

=RADIANS(A2)

20 degrees is approximately equal to 0.34906585.

Copy the formula using the shortcut key Ctrl + D.

As you can see from the above snapshot that angle in RADIANS can be extracted using the RADIANS function.
Hope you understood how to use RADIANS function and PI function in Excel. Explore more articles on Excel Date & Time functions here. Please feel free to state your query or feedback for the above article.