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<div><span class="kw">theorem </span><a NAME="T12"><span class="comment"><font color="firebrick">:: SIN_COS5:12</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font> being   <a href="xreal_0.html#NM1" title="XREAL_0:NM.1">Real</a> holds   <a href="sin_cos4.html#K2" title="SIN_COS4:func.2">cot</a> <font color="Olive" title="b1">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 <a href="xcmplx_0.html#K7" title="XCMPLX_0:func.7">/</a> <span class="p1">(<span class="default"><a href="sin_cos4.html#K1" title="SIN_COS4:func.1">tan</a> <font color="Olive" title="b1">x</font></span>)</span> <span class="kw">by</span> <span class="lab"><a class="ref" href="xcmplx_1.html#T57" onmouseover="rs('xcmplx_1/T57')" onmouseout="rh()">XCMPLX_1:57</a></span>;<br/></div></div>
