The 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.