In the figure above, points A, B, and C lie on the circumference of the circle centered at O. If ∠OAB measures 50º and
∠BCO measures 60º, what is the degree measure of ∠AOC?42.
(F) 110
(G) 125
(H) 140
(J) 250
(K) It cannot be determined from the information given.- If the value of a is the same in both figures above, what is the value of b?
(A) 45
(B) 60
(C) 105
(D) 120
(E) 135