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Mathematics
Mathematics
Problem
From an external point
P
P
P
, two tangents
P
A
PA
P
A
and
P
B
PB
P
B
are drawn to a circle with centre
O
O
O
. Prove that the four points
O
O
O
,
A
A
A
,
P
P
P
and
B
B
B
lie on the same circle.
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