IMCOS functionThe IMCOS function returns the cosine of the given complex number. For example, a given complex number “x+yi” returns “cos(x+yi).”
Parts of an IMCOS formula
IMCOS(number)
Part
Description
Notes
number
The complex number for which you want the cosine.
This can be either the result of the COMPLEX function, a real number (which will be interpreted as a complex number with imaginary part equal to 0), or a string in the format “x+yi” where x and y are numeric.
Sample formulas
IMCOS(COMPLEX(4, 6))
IMCOS(4)
IMCOS(“2+3i”)
Notes
The IMCOS function returns an error if the given number isn’t a valid complex number.
Examples
A
B
1
Formula
Result
2
=IMCOS(COMPLEX(4, 1))
-1.00862481342516+0.889395195838485i
3
=IMCOS(3.5)
-0.936456687290796
4
=IMCOS(“3+2i”)
-3.72454550491532-0.511822569987385i
Related function
COMPLEX: The COMPLEX function creates a complex number, given real and imaginary coefficients.