$\frac{270EHORS_{15}S_{32}TU^{2}}{\cos(DNO)}$
$D=0\text{ or }N=0\text{ or }\nexists n_{1}\in \mathrm{Z}\text{ : }O=\frac{\pi n_{1}}{DN}+\frac{\pi }{2DN}$

$\frac{270EHOS_{15}S_{32}TU^{2}}{\cos(DNO)}$
$D=0\text{ or }N=0\text{ or }\nexists n_{1}\in \mathrm{Z}\text{ : }O=\frac{\pi n_{1}}{DN}+\frac{\pi }{2DN}$