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Problems
Mathematics
Mathematics
Problem
Points
A
,
B
,
A,\,B,
A
,
B
,
and
C
C
C
lie on a circle with centre
O
O
O
. If
∠
A
O
B
=
70
∘
\angle AOB = 70^{\circ}
∠
A
O
B
=
7
0
∘
and
∠
B
O
C
=
50
∘
\angle BOC = 50^{\circ}
∠
B
O
C
=
5
0
∘
, arrange the chords
A
B
AB
A
B
,
B
C
BC
B
C
, and
A
C
AC
A
C
in descending order of length.
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