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(  <a href="sin_cos.html#K19" target="_self">sin</a>  is   <a href="partfun1.html#NM1">PartFunc</a> of  <a href="numbers.html#K1">REAL</a> , <a href="numbers.html#K1">REAL</a>  &amp;  <a href="relset_1.html#K4">dom</a> <a href="sin_cos.html#K19" target="_self">sin</a>  <a href="hidden.html#R1">=</a>  <a href="numbers.html#K1">REAL</a>  )
 
<b>by </b><i><a class="ref" href="sin_cos.html#D20" target="_self">Def20</a></i>;<br/>
<b>hence </b><a NAME="E2:52"/>
 <a href="sin_cos.html#K19" target="_self">sin</a>  is   <a href="funct_2.html#NM1">Function</a> of  <a href="numbers.html#K1">REAL</a> , <a href="numbers.html#K1">REAL</a> 
 <b>by </b><i><a class="ref" href="funct_2.html#T130">FUNCT_2:130</a></i>;<br/>


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