Stacking Text Arguments

Question

I was wondering was is the best method in (general) I guess to stack text on top of text in very small areas as in this example:

I used the \stackrel (which I think is for math more so) command but with this LaTeX makes some pre-determined assumptions and makes the top argument smaller than the bottom as seen above. I wanted all the text to be the same size. I tried several ways, but only to come up with this way which works, but is not optimal.

Answer 1

\[
\left.\begin{aligned}
  f(\theta) & = \cos(2\theta)\\
  g(\theta) & = \sin(\theta)
\end{aligned}\right\rbrace
\begin{tabular}{l}
  Are continuous\\
  everywhere
\end{tabular}
\]

One might write \begin{tabular}{@{}l} to avoid the small space at the left of the tabular. A bit of visual formatting is always necessary: the final effect depends on many factors (for instance, the font size used).

Using \parbox or minipage here has a serious drawback: it uses up all the dedicated space, thus spoiling the global formula centering.

Answer 2

You could use a \parbox. The rcases environment is provided by mathtools.

\documentclass{article}
\usepackage{mathtools}

\begin{document}
\[
\begin{rcases}
f(\theta) = \cos(2\theta) \\
g(\theta) = \sin(\theta)
\end{rcases}
\parbox{7em}{\small Are continous \\ everywhere}
\]
\end{document} 

Answer 3

You can juse use two aligned environments and a brace. Adding some modification to the line spacing you can get the lines closely packed:

\documentclass{article}
\usepackage{amsmath}
\begin{document}
  \[\left.
  \begin{aligned}
      f(\theta) & = \cos(2\theta)\\[.5\baselineskip]
      g(\theta) & = \sin(\theta)
  \end{aligned}
  \right \}
  \begin{aligned}
      &\text{are continuous}\\[-.3\baselineskip]
      &\text{everywhere}
  \end{aligned}
  \]
\end{document}

Edit: You can of course repace the second aligned with a parbox of sufficient width. That's probably better, actually. It would then become:

\documentclass{article}
\usepackage{amsmath}
\begin{document}
  \[\left.
  \begin{aligned}
      f(\theta) & = \cos(2\theta)\\[.5\baselineskip]
      g(\theta) & = \sin(\theta)
  \end{aligned}
  \right \}
  \parbox{3cm}{
      Are continuous\\[-.3\baselineskip]
      everywhere
  }
  \]
\end{document}

With the same result.