8pi на 3 в какой четверти

[latex] \alpha =\frac{8\pi}{3} =\frac{6\pi +2\pi }{3}=2\pi +\frac{2\pi}{3}\ \textgreater \ 2\pi\; \; \to \; \; \\\\t.k.\; \; 0\ \textless \ \frac{2\pi}{3}\ \textless \ \frac{\pi}{2} \; ,\; to\; \; \alpha \in 1\; chetvert[/latex]