Exceljet

Quick, clean, and to the point

Excel COS Function

Excel COS function
Summary 

The Excel COS function returns the cosine of angle given in radians. To supply an angle to COS in degrees, multiply the angle by PI()/180 or use the RADIANS function to convert to radians.

Purpose 
Get the cosine of an angle
Return value 
The cosine value
Syntax 
=COS (number)
Arguments 
  • number - The angle in radians for which you want the cosine.
Usage notes 

The COS function expects radians. To supply an angle to COS in degrees, multiply the angle by PI()/180 or use the RADIANS function to convert to radians. For example, to get the COS of 60 degrees, you can use either formula below:

=COS(60*PI()/180)
=COS(RADIANS(60))

Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.