Given real number input, the function behaves like the cosine function.
Related functions
IMSIN Function
The Excel IMSIN function returns the sine of a complex number.
COMPLEX Function
The Excel COMPLEX function returns the string representation of a complex number.
IMREAL Function
The Excel IMREAL function returns the real part of a complex number.
IMAGINARY Function
The Excel IMAGINARY function returns the imaginary part of a complex number.
COS Function
The Excel COS function returns the cosine of an angle given in radians.
To supply an angle to COS in degrees, use the RADIANS function to convert to radians.
