<PRE><B>Question 755433</B>
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*[tex \LARGE x\ =\ x&#39;\cos\varphi\ -\ y&#39;\sin\varphi]


All you need is to plug in the values for *[tex \LARGE \cos 30^{\circ}] and *[tex \LARGE \sin 30^{\circ}]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
&lt;font face=&quot;Math1&quot; size=&quot;+2&quot;&gt;Egw to Beta kai to Sigma&lt;/font&gt;
My calculator said it, I believe it, that settles it
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