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	<title>MetaFilter posts tagged with trigonometry</title>
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	<description>Posts tagged with 'trigonometry' at MetaFilter.</description>
	<pubDate>Sat, 21 Mar 2009 10:44:08 -0800</pubDate> <lastBuildDate>Sat, 21 Mar 2009 10:44:08 -0800</lastBuildDate>

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		<title>I want my MathTV</title>
		<link>http://www.metafilter.com/80193/I%2Dwant%2Dmy%2DMathTV</link>
		<description>&lt;a href="http://www.mathtv.com/"&gt;MathTV is a real problem solver for many.&lt;/a&gt; It is also found on &lt;a href=&quot;http://www.youtube.com/MathTV&quot;&gt;YouTube&lt;/a&gt;, and is free. Here is some &lt;a href=&quot;http://www.mathtv.com/about.htm&quot;&gt;background&lt;/a&gt;.  </description>
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		<pubDate>Sat, 21 Mar 2009 10:44:08 -0800</pubDate>
		<category>algebra</category>
		<category>calculus</category>
		<category>khanacademy</category>
		<category>math</category>
		<category>mathtv</category>
		<category>trigonometry</category>
		<category>tutor</category>
		<dc:creator>Brian B.</dc:creator>
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		<title>Sine of the times</title>
		<link>http://www.metafilter.com/45387/Sine%2Dof%2Dthe%2Dtimes</link>
		<description>&lt;a href="http://physorg.com/news6555.html"&gt;Norman Wildberger&apos;s New Trigonometry&lt;/a&gt; Dr Norman Wildberger has rewritten the arcane rules of trigonometry and eliminated sines, cosines and tangents from the trigonometric toolkit. The First chapter of his new book, Divine Proportions, is online (.&lt;a href=&quot;http://web.maths.unsw.edu.au/~norman/papers/Chapter1.pdf&quot;&gt;pdf&lt;/a&gt;).  </description>
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		<pubDate>Sun, 25 Sep 2005 21:34:44 -0800</pubDate>
		<category>math</category>
		<category>mathematics</category>
		<category>maths</category>
		<category>trig</category>
		<category>trigonometry</category>
		<category>wildberger</category>
		<dc:creator>Kwantsar</dc:creator>
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		<title>64=65?</title>
		<link>http://www.metafilter.com/35039/6465</link>
		<description>&lt;a href="http://www.blessa.com/64-equals-65.gif"&gt;64=65?&lt;/a&gt; there must be some kind of trick to this, right?  </description>
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		<pubDate>Wed, 18 Aug 2004 05:42:23 -0800</pubDate>
		<category>math</category>
		<category>mathematics</category>
		<category>puzzle</category>
		<category>trigonometry</category>
		<dc:creator>pyramid termite</dc:creator>
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