TeX Quellcode:

\dfrac{8}{9} \left(\cos\left(\dfrac{\pi}{2} \right)+i \sin\left(\dfrac{\pi}{2} \right) \right) \; : \; \left( \dfrac{16}{27} \left(\cos\left(\dfrac{3\pi}{10} \right)+i \sin\left(\dfrac{3\pi}{10} \right)\right) \right)