<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T51"><span class="comment"><font color="firebrick">:: SIN_COS:51</font></span><br/></a><div class="add"> <a href="sin_cos.html#K23" title="SIN_COS:func.23">exp_R</a> <a href="numbers.html#K5" title="NUMBERS:func.5">0</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 <span class="kw">by</span> <span class="lab"><a class="txt" href="sin_cos.html#E89"><span class="lab"><font color="Green" title="E67">Lm11</font></span></a></span>;<br/></div></div>
