Question

18)

BD = DC and DBC = 30°. Find the measure
of BAC, if O is centre of the circle.?​

Answer 1

B D  =  D C

⇒  ∡  B C D  = 30 °

∴  ∡  B D C  =  120 °

⇒  ∡  BA C  =  60 °  (Opposite  angles of cyclic quadrilateral)

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