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Mathematics
Mathematics
Problem
In a circle with centre
O
O
O
,
∠
A
O
B
=
116
∘
\angle AOB = 116^\circ
∠
A
O
B
=
11
6
∘
. Point
C
C
C
lies on the major arc
A
B
AB
A
B
. Calculate
∠
A
C
B
\angle ACB
∠
A
C
B
.
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