IMCOS(inumber)

Returns the cosine of a complex number.

inumberThe complex number for which you want the cosine.

Remarks

* If "inumber" is not in the form of x + yi or x + yj, then #NUM! is returned.
* If "inumber" is not text, then #VALUE! is returned.
* You can use the IMSIN function to return the sine of a complex number.
* You can use the IMTAN function to return the tangent of a complex number.
* You can use the COMPLEX function to convert real and imaginary coefficients into a complex number.
* In Excel 2007 the format returned by this function has been changed so that the imaginary part is displayed in consistent scientific notation.
* In Excel 2007 the accuracy of this function was improved.
* In Excel 2003 this function was only available when you had the Analysis ToolPak add-in loaded.
* For the Microsoft documentation refer to support.office.com

 A
1Width=500
2=IMCOS("1+i") = 0.833730025131149-0.988897705762865i
3=IMCOS("i") = 1.543
4=TEXT(IMCOS("i"),"0.000") = 1.543
5=IMCOS("some text") = #NUM!


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