Given: In circle O, m BAC = 290. So angle COB = 70 and angle CAB = 35
So angle COB = 70 and angle CAB = 140
So angle AOB = 70 and angle CAB = 120
O O
O So angle AOB = 120 and angle COB = 60

i dont know men

step-by-step explanation:

or

21

jk it's 20

step-by-step explanation:

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.