<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T20"><span class="comment"><font color="firebrick">:: SIN_COS3:20</font></span><br/></a><div class="add"> <a href="sin_cos.html#K15" title="SIN_COS:func.15">exp</a> <a href="complex1.html#K5" title="COMPLEX1:func.5">0c</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 <span class="kw">by</span> <span class="lab"><a class="ref" href="sin_cos.html#T49" onmouseover="rs('sin_cos/T49')" onmouseout="rh()">SIN_COS:49</a>, <a class="ref" href="sin_cos.html#T51" onmouseover="rs('sin_cos/T51')" onmouseout="rh()">SIN_COS:51</a></span>;<br/></div></div>
