50 POINTS!!! WILL GIVE BRAINLIEST FOR RIGHT ANSWER!!! PLZ SHOW WORK!!

Quadrilateral ABCD is inscribed in circle O.

What is ​ m∠B ​ ?

50 POINTS WILL GIVE BRAINLIEST FOR RIGHT ANSWER PLZ SHOW WORK Quadrilateral ABCD is inscribed in circle O What is mB class=