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This article describes the formula syntax and usage of the IMSIN function in Microsoft Excel.


Returns the sine of a complex number in x + yi or x + yj text format.



The IMSIN function syntax has the following arguments:

  • Inumber    Required. A complex number for which you want the sine.


  • Use COMPLEX to convert real and imaginary coefficients into a complex number.

  • The sine of a complex number is:



Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.





Returns the sine of a complex number, 4+3i.


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