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I am looking for suggestions on how to typeset complex numbers in the modulo-argument form, sometimes called phasor notation. Have already checked Conventions for typesetting complex vectors and vectors with complex components but nobody mentions this in particular. I am explicitly excluding exponential and sine-cosine notations. My MWE is as follows

\documentclass{article}
\begin{document}
    $z = r \angle \phi$
\end{document}

I think it looks ugly, specially if the angle has many digits, ie

$z = 1.19 \angle -78.2039^{\circ}$

I was thinking of an \angle replacement which maybe would extend the lower segment up to the last digit. What do you think?

EDIT: It looks like the steinmetz package doesn't do a good job with the vertical space if the \phasor{} argument has a \fraction{}{} with parenthesis, see:

\documentclass{article}
\usepackage{steinmetz}

\begin{document}
    Something.
    \[I = I \phase{\left(\frac{A_0}{B_0}\right)}\]
    This line is too close to the upper equation, don't you think?

    \[I = I \phase{\left(\frac{A_0}{B_0}\right)}\]
    Whereas this line is NOT so close to the upper equation.
\end{document}

Strangely, commenting the first line (% Something.) fixes the problem. Is there any way to fix this?

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  • Use \textdegree insted of \circ
    – pablos
    Jun 17, 2014 at 13:42
  • @pablos: \textdegree seems to be working in text mode only for me. Using it inside $...$ or \[...\] outputs nothing.
    – Noitaenola
    Jun 18, 2014 at 2:28
  • @Noitaenola You can use an empty line after Something. Maybe you can try \phase[1]{\left(\frac{A_0}{B_0}\right)} that seems to "fix" it.
    – jotagah
    Jun 18, 2014 at 23:54
  • 1
    @Noitaenola, I guess you can try the siunitx package. So you can use, for instance, $I=10\phase{\ang{30}}$.
    – jotagah
    Jun 18, 2014 at 23:59

1 Answer 1

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The steinmetz package was written exactly for this.

\documentclass{article}

\usepackage{steinmetz}

\begin{document}

$z = 1.19 \phase{-78.2039^{\circ}}$

\end{document}

enter image description here

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  • This notation looks so awesome compared to \angle!
    – 71GA
    Sep 22, 2020 at 3:58

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