Math, asked by sukhdevbanni9, 1 year ago

please solve this question

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Answered by shreya32916

1

Answer:

Connect 0 to C and then angle oca and angle oac will be equal as OA and OC are radius of the circle .

Similarly angle OCB and angle OBC are equal.

Therefore angle ACB = angle OCA +angle OCB

angle ACB = 30 + 40 =70

angle AOB = 2 * angle ACB = 2 *70 =140

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