37 lines
1.1 KiB
TeX
37 lines
1.1 KiB
TeX
\documentclass{article}
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\usepackage{tikz}
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\usetikzlibrary{arrows}
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\usetikzlibrary{snakes}
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\usepackage{verbatim}
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\tikzstyle{mybox} = [draw=red, fill=blue!20, very thick,
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rectangle, rounded corners, inner sep=10pt, inner ysep=20pt]
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\begin{document}
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\begin{tikzpicture}[scale=1.2]
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%\begin{tikzpicture}[scale=3]
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%\draw[step=0.1, color=lightgray] (-1,-1) grid(4.5,4.5);
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% \draw[help lines] (0,0) grid (4,4);
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\draw[-triangle 45] (0,0) -- (4,0) node[right] {$x$};
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\foreach \x in {1,2,3}
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\draw (\x cm,1pt) -- (\x cm,-1pt) node[anchor=north] {$\x$};
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\draw[-triangle 45] (0,0) -- (0,4) node[above] {$y$};
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\foreach \y in {1,2,3}
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\draw (1pt,\y cm) -- (-1pt,\y cm) node[anchor=east] {$\y$};
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\draw [color=blue, thick, -triangle 45](0,0) -- (1,3) node[sloped,above] {$\vec b$} ;
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\draw [color=red, thick, -triangle 45](0,0) -- (3,1) node[right] {$\vec a$} ;
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\draw (0,0) +(19:25mm) arc (19:71:25mm);
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\draw (0.5,1) node[right, text width=15mm]{$\alpha \left ( \vec a, \vec b \right )$};
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\end{tikzpicture}
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\end{document} |