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<A NAME=COT>

<TITLE>COT</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>COT</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
<P>
 
<em>cot</em> represents the cotangent of its argument. It takes an arbitrary 
scalar expression as its argument. The derivative of <em>acot</em> and some 
simple properties are known to the system. 
<P>
<P>
 <P> <H3> 
syntax: </H3>
<em>cot</em>(&lt;expression&gt;) or <em>cot</em> &lt;simple\_expression&gt; 
<P>
<P>
<P>
&lt;expression&gt; may be any scalar REDUCE expression. &lt;simple\_expression
&gt; 
must be a single identifier or begin with a prefix operator name. 
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>
cot(a)*tan(a); 

  COT(A)*TAN(A)) 


cot(1); 

  COT(1) 


df(cot(2*x),x); 

               2
  - 2*(COT(2*X)   + 1)

</TT></PRE><P>Numerical values of expressions involving <em>cot</em> may be foun
d by 
turning on the switch 
<A HREF=r37_0330.html>rounded</A>. 
<P>
<P>
<P>
<P>