Minor corrections to L26.

Lectures/L26_SpecificationQuality/SpecificationQuality.tex

@@ -60,8 +60,6 @@
 \begin{itemize}
 \item Part 1 - Specification: due 11:59 pm \structure{Mar 11}
 \item Part 2 - Code: due 11:59 pm Mar 20
-\item $\theta = \cos^{-1} \left ( \frac {\mathbf{u} \cdot \mathbf{v}}{|| \mathbf{u} || ||
-\mathbf{v} ||} \right )$
 \end{itemize}
 
 \item A4
@@ -185,7 +183,7 @@
 \item Person
 \item Other system
 \item Hardware
-\item etc. (anything external
+\item etc. (anything external)
 \ei
 \item Each circle is a use case
 \item Lines represent possible interactions