There is a theorem that states that the arc of an inscribed angle(one that has its vertex on the circle, point C) is 2 times its measure. So therefore arc AB would be Angle C x 2 = 57 * 2 = 144.
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
