1.

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 -

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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