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OpenStudy (anonymous):
simplify (sin4pi/3) - (sin3pi/4) / 4pi/3 - 3pi/4
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OpenStudy (anonymous):
Hint: \[Sin \frac{4\prod }{3} = sin (2\prod -\frac{2\prod }{3})\]
OpenStudy (anonymous):
\[sin(2\prod - \Theta ) =- sin\Theta \]
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