The COS function returns the cosine of a number.

COS takes 1 required argument and no optional arguments:

Syntax: COS(number)

#1)
Using the COS function:
#2)
The arguments for the COS function are:
Argument Required? Description
number Required The angle in radians for which you want the cosine.

Summary

The COS function returns the cosine of a number.
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