\begin{frame}
  \frametitle{Trigonometric Functions: Inverse Cotangent}
  
  \begin{minipage}{.4\textwidth}
  \begin{center}
  \scalebox{.7}{
  \begin{tikzpicture}[default,baseline=0cm]
    \diagram{-.5}{2.3}{-3}{3}{1}
    \begin{scope}[ultra thick]
    \draw[cblue] plot[smooth,domain=0.2:1.8,samples=300] (\x,{cot(\x*90)});
    \end{scope}
    \diagramannotatez
    \diagramannotatexx{1/$\frac{\pi}{2}$,2/$\pi$}
    \diagramannotatey{1,-1}

    \begin{scope}[cred,dashed]
    \draw (0,-3) -- (0,3);
    \draw (2,-3) -- (2,3);
    \end{scope}
  \end{tikzpicture}
  }\\[.5ex]
  $\cot x$ restricted to $(0,\pi)$
  \end{center}    
  \end{minipage}\pause
  \begin{minipage}{.59\textwidth}
  \begin{center}
  \scalebox{.7}{
  \begin{tikzpicture}[default,baseline=0cm]
    \diagram{-3}{3}{-.5}{2.3}{1}
    \begin{scope}[ultra thick]
    \draw[cgreen] plot[smooth,domain=0.2:1.8,samples=300] ({cot(\x*90)},\x);
    \end{scope}
    \diagramannotatez
    \diagramannotatex{1,-1}
    \diagramannotateyy{1/$\frac{\pi}{2}$,2/$\pi$}
  \end{tikzpicture}
  }\\[.5ex]
  $\cot^{-1} x$
  \end{center}    
  \end{minipage}
  \pause\medskip
  
  \begin{block}{}
  \begin{malign}
    \cot^{-1} y = x \;\;\iff\;\; \cot x = y \text{ and } 0 < x < \pi
  \end{malign}
  \end{block}
  
  \pause
  The function $\cot^{-1}$ has domain \pause $(-\infty,\infty)$ and range \pause$(0,\pi)$.
\end{frame}