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<div><span class="kw">theorem </span><a NAME="T44"><span class="comment"><font color="firebrick">:: SIN_COS9:44</font></span><br/></a><div class="add">(  <a href="sin_cos9.html#K4" title="SIN_COS9:func.4">arccot</a> <a href="numbers.html#K5" title="NUMBERS:func.5">0</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <a href="sin_cos.html#K28" title="SIN_COS:func.28">PI</a> <a href="xcmplx_0.html#K7" title="XCMPLX_0:func.7">/</a> 2 &amp; <a href="sin_cos9.html#K2" title="SIN_COS9:func.2">arccot</a> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="numbers.html#K5" title="NUMBERS:func.5">0</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <a href="sin_cos.html#K28" title="SIN_COS:func.28">PI</a> <a href="xcmplx_0.html#K7" title="XCMPLX_0:func.7">/</a> 2 )</div></div>
