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<a href="sin_cos2.html#K1" target="_self">sinh</a>  <a href="seq_1.html#K2">.</a> 0 = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="sin_cos.html#K27">exp_R</a>  <a href="seq_1.html#K2">.</a> 0</span>)</span> <a href="binop_2.html#K10">-</a> <span class="p2">(<span class="default"><a href="sin_cos.html#K27">exp_R</a>  <a href="seq_1.html#K2">.</a> <span class="p3">(<span class="default"><a href="binop_2.html#K7">-</a> 0</span>)</span></span>)</span></span>)</span> <a href="binop_2.html#K12">/</a> 2
<b>by </b><i><a class="ref" href="sin_cos2.html#D1" target="_self">Def1</a></i>
<br/>.= 
<span class="p1">(<span class="default">1 <a href="binop_2.html#K10">-</a> <span class="p2">(<span class="default"><a href="sin_cos.html#K27">exp_R</a>  <a href="seq_1.html#K2">.</a> 0</span>)</span></span>)</span> <a href="binop_2.html#K12">/</a> 2
<b>by </b><i><a class="ref" href="sin_cos.html#T56">SIN_COS:56</a>, <a class="ref" href="sin_cos.html#D27">SIN_COS:def 27</a></i>
<br/>.= 
<span class="p1">(<span class="default">1 <a href="binop_2.html#K10">-</a> 1</span>)</span> <a href="binop_2.html#K12">/</a> 2
<b>by </b><i><a class="ref" href="sin_cos.html#T56">SIN_COS:56</a>, <a class="ref" href="sin_cos.html#D27">SIN_COS:def 27</a></i>
<br/>.= 
0

;<br/>
<b>hence </b><a NAME="E2:31"/>
<a href="sin_cos2.html#K1" target="_self">sinh</a>  <a href="seq_1.html#K2">.</a> 0 <a href="hidden.html#R1">=</a> 0
 ;<br/>


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