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And please also do explain the steps ...
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Answer:
90 degree
Step-by-step explanation:
angle ABC = 1/2 m( arc AC)
45 degree = 1/2 m( arcAC)
m(arcAC)= 2* 45 degree
m(arcAC)= 90 degree
m(arcAC)= m angle AOC.... central angle
therefore, angle AOC =90 degree
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