how to solve this sum
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angle AOB will be double of angle ACB as per the property of circles .
so angle AOB will be 130
and AO & OB are equal as they are both radius of the circle
it is an isosceles triangle
so the angle OAB and OBA will be both 50 degrees.
so angle AOB will be 130
and AO & OB are equal as they are both radius of the circle
it is an isosceles triangle
so the angle OAB and OBA will be both 50 degrees.
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