Returns the cosine of the given angle.
Syntax
COS(number)
Number is the angle in radians for which you want the cosine. If the angle is in degrees, multiply it by PI()/180 to convert it to radians.
Examples
COS(1.047)
equals 0.500171
COS(60*PI()/180)
equals 0.5, the cosine of 60 degrees