What is IMARGUMENT function in Excel? IMARGUMENT function is one of Engineering functions in Microsoft Excel that returns the argument (theta), an angle expressed in radians, such that: Syntax of IMARGUMENT function IMARGUMENT(inumber) The IMARGUMENT function syntax has the following arguments: Inumber: A complex number for which you want the argument . IMARGUMENT formula explanation Use COMPLEX to convert real and imaginary coefficients…