Question 167564
<pre><font size = 4 color = "indigo"><b>
Different authors and different teachers use 
different domains for the domain of {{{f(x)=arccsc(x)}}} 
and {{{f(x)=arccot(x)}}}. See this site for a discussion
of this:

http://sci.tech-archive.net/Archive/sci.math/2006-03/msg02129.html

Edwin</pre>