Cosine<br>Graph of the <a href="https://en.wikipedia.org/wiki/cosine" class="extiw" title="w:cosine">cosine</a>-function cos(x). One period from 0 to 2π is drawn. x- and y-axis have the same units. All labels are embedded in "Computer Modern" font.
<a href="//commons.wikimedia.org/wiki/User:Geek3" title="User:Geek3">Geek3</a>
2010-02
<span class="int-own-work" lang="en">Own work</span>