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<record version="2" id="26">
 <title>direction cosines</title>
 <name>DirectionCosines</name>
 <created>2004-12-28 19:58:41</created>
 <modified>2004-12-28 20:16:59</modified>
 <type>Definition</type>
 <creator id="1" name="bloftin"/>
 <modifier id="1" name="bloftin"/>
 <author id="1" name="bloftin"/>
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 <content>The Direction Cosines define the orientation of a vector with respect to a coordinate reference frame.  Each direction cosine is the cosine of the angle between the vector and its corresponding  coordinate axis.  Let us first look at a  two dimensional example in figure:
\newline
\begin{figure}[!hhp]
\begin{center}
\caption{2D - Direction Cosines}
\includegraphics[width=\textwidth]{figure1.eps}
\end{center}
\end{figure}</content>
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