Excel RADIANS Function Example
This example uses the RADIANS function to convert a 45-degree angle to radians.
The information covers the steps used to enter the RADIANS function into cell B2 of the example worksheet.
ChooseMath & Trigfrom the ribbon to launch the function drop-down list.

Click onRADIANSin the list to bring up theFunctionDialog Box.
Click onCell A2in the worksheet to enter the cell reference as the function’s argument.
ClickDoneto complete the function the answer0.785398163,which is 45-degrees expressed in radians, appears incell B2.

It looks like this:
Why Use the Excel RADIANS Function?
The only problem is that these functions requireangles expressed in radians, not degrees.