Preveď stupne na radiány:
90°
\( 180° \ =\ π\ \textrm{rad} \)
\( \large90\degree=\frac{2\pi}{3}\textrm{\large rad} \)
\( \large90\degree=\frac{\pi}{2}\textrm{\large rad} \)
\( \large90\degree=\frac{\pi}{3}\textrm{\large rad} \)
\( \large90\degree=\frac{\pi}{4}\textrm{\large rad} \)
