Question 22
Acute-angled triangle $ABC$ is inscribed in a circle with center at $O;$ $\overset{\frown}{AB}=120^\circ$ and $\overset{\frown}{BC}=72^\circ.$ A point $E$ is taken in minor arc $AC$ such that $OE$ is perpendicular to $AC.$ Then the ratio of the magnitudes of angles $OBE$ and $BAC$ is: