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<div>:: <span class="kw">deftheorem </span>   defines <a href="sin_cos.html#K19" title="SIN_COS:func.19">cos</a> <a onclick="hs(this)" href="javascript:()">SIN_COS:def 19 : <br/></a><span> for <font color="Olive" title="b1">th</font> being   <a href="xreal_0.html#NM1" title="XREAL_0:NM.1">Real</a> holds   <a href="sin_cos.html#K19" title="SIN_COS:func.19">cos</a> <font color="Olive" title="b1">th</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <a href="sin_cos.html#K18" title="SIN_COS:func.18">cos</a> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b1">th</font>;<br/></span></div>
