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Mathematics
Mathematics
Problem
In a circle with centre
O
O
O
, chords
A
B
AB
A
B
and
C
D
CD
C
D
subtend equal angles at the centre, that is
∠
A
O
B
=
∠
C
O
D
\angle AOB = \angle COD
∠
A
O
B
=
∠
C
O
D
. Prove that
A
B
=
C
D
AB = CD
A
B
=
C
D
.
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