Circumcentre of ΔABC is O. If ∠BAC = 75° and ∠BCA = 80°, then what is the value (in degrees) of ∠OAC?

Circumcentre of ΔABC is O. If ∠BAC = 75° and ∠BCA = 80°, then w

1.	Circumcentre of ΔABC is O. If ∠BAC = 75° and ∠BCA = 80°, then what is the value (in degrees) of ∠OAC?
A.	45
B.	65
C.	90
D.	95
Answer» C. 90

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Circumcentre of ΔABC is O. If ∠BAC = 75° and ∠BCA = 80°, then what is the value (in degrees) of ∠OAC?

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