Returns the cosine of a given angle.
Syntax
COS(number)Argumente
numbererforderlich
The angle in radians for which you want the cosine.
The COS function calculates the cosine of an angle provided in radians. If your angle is in degrees, you must multiply it by PI()/180 or use the RADIANS function to convert it.
=COS(0)→1Returns the cosine of 0 radians, which is 1.
=COS(RADIANS(60))→0.5Converts 60 degrees to radians and returns the cosine, which is 0.5.
Select a cell
Click on the cell where you want to display the result.
Enter the formula
Type =COS(number) and replace 'number' with your value or cell reference.
Excel expects the input to be in radians. If your input is in degrees, ensure you convert it using the RADIANS function.