Answer:
120°
Step-by-step explanation:
ABCD is a cyclic Quadrilateral.
[tex] \angle CBE [/tex] is the exterior angle of cyclic quadrilateral ABCD.
Since, the exterior angle of a cyclic quadrilateral is equal to the interior opposite angle.
[tex] \therefore x = m\angle ADC\\\\
\therefore x = 120\degree [/tex]
