Factor
\frac{\left(2-\sqrt{3}\right)\cos(\alpha )}{2}
Evaluate
\frac{\left(2-\sqrt{3}\right)\cos(\alpha )}{2}
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\frac{2\cos(\frac{3\alpha -\pi }{3})+\sin(\alpha )+2\cos(\frac{6\alpha +5\pi }{6})-2\sin(\frac{6\alpha +11\pi }{6})}{2}
Factor out \frac{1}{2}.
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