O is the circumcentre of △ABC. If a BAC=85°, a BCA = 75° the a – McqOptions

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1.	O is the circumcentre of △ABC. If a BAC=85°, a BCA = 75° the a OAC is equal to:
A.	70°
B.	40°
C.	60°
D.	50°
Answer» E.

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