π4⋅π6\frac{\pi}{4} \cdot \frac{\pi}{6}4π⋅6π
π3⋅π5\frac{\pi}{3} \cdot \frac{\pi}{5}3π⋅5π
−π3,−π8-\frac{\pi}{3},-\frac{\pi}{8}−3π,−8π
π7⋅π5\frac{\pi}{7} \cdot \frac{\pi}{5}7π⋅5π
−π,π-\pi, \pi−π,π