A picture to explain the Definition of the trigonometric tangent function. In the SVG code, 50px→1unit and θ→50°.
<a href="https://en.wikibooks.org/wiki/User:3D_Vector" class="extiw" title="wikibooks:User:3D Vector">3D Vector</a> at <a href="https://en.wikibooks.org/wiki/" class="extiw" title="wikibooks:">English Wikibooks</a>
8 November 2007 (original upload date)
Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikibooks.org">en.wikibooks</a></span> to Commons.