TeX Quellcode:

{\varphi = \arccos \left(\dfrac{\frac{27}{11}\cdot 22 + \sqrt{3}\cdot\sqrt{12} + 8\cdot 16}{\sqrt{\left(\frac{27}{11}\right)^2+\left(\sqrt{3}\right)^2+8^2} \cdot \sqrt{22^2+ \left(\sqrt{12}\right)^2+16^2}}\right) = \arccos \left(\dfrac{188}{\sqrt{\frac{8.836}{121}} \cdot \sqrt{752}}\right) \approx 36{,}65^{\circ}}