abs(arcsin(z))
<a href="//commons.wikimedia.org/wiki/User:Pengo" title="User:Pengo">Pengo</a>
<p><span class="int-own-work" lang="en">Own work</span>
</p>
<dl><dd>Based on <a href="//commons.wikimedia.org/wiki/File:Complex_sine.svg" title="File:Complex sine.svg">File:Complex sine.svg</a> by <a href="//commons.wikimedia.org/wiki/User:Farry" title="User:Farry">Dave Farrance</a></dd></dl>