Answer
$\frac{2\pi}{3}$
Work Step by Step
$\pi-\frac{\pi}{3}=\frac{3}{3}\times\pi-\frac{\pi}{3}=\frac{3\pi}{3}-\frac{\pi}{3}=\frac{3\pi-\pi}{3}=\frac{2\pi}{3}$
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