<?xml version="1.0" encoding="UTF-8"?>

<record version="1" id="26">
 <title>direction cosines</title>
 <name>DirectionCosines</name>
 <created>2004-12-28 19:58:41</created>
 <modified>2004-12-28 19:58:41</modified>
 <type>Definition</type>
 <creator id="1" name="bloftin"/>
 <modifier id="1" name="bloftin"/>
 <author id="1" name="bloftin"/>
 <preamble>\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage{graphicx}
\usepackage{xypic}
\usepackage{epsfig}</preamble>
 <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.

\begin{figure}
\epsfig{file=figure1.eps}
\caption{2D - Direction Cosines}
\label{01}
\end{figure}</content>
</record>
