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Jingwei Chen's user avatar
Jingwei Chen's user avatar
Jingwei Chen's user avatar
Jingwei Chen
  • Member for 2 months
  • Last seen more than a month ago
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Linear combinations of roots of unity
$\sqrt{|1-\omega|}$ is not equal to $\sin(\frac{\pi}{n})$, but $\sqrt{1-\cos(\frac{\pi}{n})}$.