Answer:
arc BEC = 134°
Explanation:
an inscribed angle is half the measure of its intercepted arc , then
arc AC = 2 × ∠ ABC = 2 × 75° = 150°
The measure of the arcs in a circle = 360° , then
arc BEC = 360° - AB - AC = 360° - 76° - 150° = 360° - 226° = 134°