Simplify the trigonometric expression

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Simplify the trigonometric expression

Postby Math Tutor » Fri Jun 17, 2011 10:13 am

Simplify the trigonometric expression:
[tex]tg(\frac{\pi}{11})tg(\frac{2\pi}{11})tg(\frac{3\pi}{11})tg (\frac{4\pi}{11})tg (\frac{5\pi}{11})[/tex]
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