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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="GENERATOR" content="Mozilla/4.77C-CCK-MCD {C-UDP; EBM-APPLE} (Macintosh; U; PPC) [Netscape]">
<title>change-sign.html</title>
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<body>
Enter 90-30 degrees.
<br>
<table BORDER CELLSPACING=0 CELLPADDING=3 >
<tr>
<td>eg.Calculator</td>
<td> </td>
</tr>
<tr>
<td>key</td>
<td>x()</td>
</tr>
<tr>
<td>90</td>
<td> </td>
</tr>
<tr>
<td>30</td>
<td> </td>
</tr>
<tr>
<td>-</td>
<td>60.0000</td>
</tr>
</table>
</body>
</html>
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