IMARGUMENT

Returns the argument q (theta), an angle expressed in radians, such that:

If this function is not available, run the Setup program to install the Analysis ToolPak. After you install the Analysis ToolPak, you must enable it by using the Add-Ins command on the Tools menu.

Syntax

IMARGUMENT(inumber)

Inumber   is a complex number for which you want the argument q.

Remarks

• Use COMPLEX to convert real and imaginary coefficients into a complex number.
• If inumber is not in the form x + yi or x + yj, IMARGUMENT returns the #NUM! error value.
• IMARGUMENT is calculated as follows:

  

  where:

  

  and

  z = x + yi

Example

IMARGUMENT("3+4i") equals 0.927295