2nπ±π62 \mathrm{n} \pi \pm \frac{\pi}{6}2nπ±6π
nπ+sin−1(32)\mathrm{n} \pi+\sin ^{-1}\left(\frac{\sqrt{3}}{2}\right)nπ+sin−1(23)
nπ+(−1)nπ3\mathrm{n} \pi+(-1)^{\mathrm{n}} \frac{\pi}{3}nπ+(−1)n3π
nπ\mathrm{n} \pinπ