13. The circumcentre of the triangle ABC is O. Prove that ∠OBC + ∠BAC = 90º.

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13. The circumcentre of the triangle ABC is O. Prove that ∠OBC + ∠BAC = 90º.
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13. The circumcentre of the triangle ABC is O. Prove that ∠OBC + ∠BAC = 90º. 13. The circumcentre of the triangle ABC is O. Prove that ∠OBC + ∠BAC = 90º. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
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