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In the adjoining figure. A, B, C are three points on a circle O. If ∠AOB = 90∘ and ∠BOC = 120∘, then ∠ABC in degree is - |
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Answer» In the adjoining figure. A, B, C are three points on a circle O. If ∠AOB = 90∘ and ∠BOC = 120∘, then ∠ABC in degree is -
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