\documentclass{article}

\usepackage[usenames,dvipsnames]{color,xcolor}

\usepackage{tikz}
\usetikzlibrary{calc,shapes}

\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{1mm}%

\begin{document}

\begin{tikzpicture}[rotate=20]

 \draw[-latex](0,0)--(8,0)node[below,midway,rotate=20]{$\overrightarrow{v}$};
 
 \draw[-latex,blue](0,0)--(3,0) node[below,midway,rotate=20]{$\overrightarrow{v}||\overrightarrow{u}$};
 
  \draw[-latex,blue](3,0)--(3,4) node[midway,sloped,above,rotate=20]{$\overrightarrow{v}\bot \overrightarrow{u}$};
  
\draw[xshift=3cm](0,0)rectangle(.3,.3);

\draw (0,0) ++(45:.8) arc (45:-45:.8);


\end{tikzpicture}

\end{document}