Let O be the centre of a circle and AC be its diameter. BD is a chord intersecting AC at E. Point B is joined to C and D. If ∠BOC = 50° and ∠AOD = 110°, then ∠BEC = ?

Let O be the centre of a circle and AC be its diameter. BD is a chord

1.	Let O be the centre of a circle and AC be its diameter. BD is a chord intersecting AC at E. Point B is joined to C and D. If ∠BOC = 50° and ∠AOD = 110°, then ∠BEC = ?
A.	70°
B.	80°
C.	55°
D.	90°
Answer» C. 55°

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Let O be the centre of a circle and AC be its diameter. BD is a chord intersecting AC at E. Point B is joined to C and D. If ∠BOC = 50° and ∠AOD = 110°, then ∠BEC = ?

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