COS function

Category: Math and trigonometry
Introduced: Excel 2003

Summary

Returns the cosine of a number

Syntax

COS(number) The COS function syntax has the following arguments:
• Number Required. The angle in radians for which you want the cosine.

Example

=COS(1.047)
=COS(60*PI()/180)
=COS(RADIANS(60))

Microsoft Support Page

https://support.microsoft.com/en-us/office/cos-function-0fb808a5-95d6-4553-8148-22aebdce5f05

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