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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E102">Th78</font></span>: <a NAME="T78"><span class="comment"><font color="firebrick">:: SINCOS10:78</font></span><br/></a><div class="add"><a href="sincos10.html#K2" title="SINCOS10:func.2">arcsec2</a> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <span class="p1">(<span class="default"><a href="fdiff_9.html#K1" title="FDIFF_9:func.1">sec</a> <a href="relset_1.html#K7" title="RELSET_1:func.7">.:</a> <span class="p2"><a href="rcomp_1.html#K4" title="RCOMP_1:func.4">].</a><span class="default"><span class="p3">(<span class="default"><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</span>)</span>,<a href="sin_cos.html#K28" title="SIN_COS:func.28">PI</a></span><a href="rcomp_1.html#K4" title="RCOMP_1:func.4">.]</a></span></span>)</span> is  <a href="valued_0.html#V5" title="VALUED_0:attr.5">increasing</a> </div></div>
