Mock AIME 1 Pre 2005 Problems/Problem 10

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Problem

$ABCDEFG$ is a regular heptagon inscribed in a unit circle centered at $O$. $l$ is the line tangent to the circumcircle of $ABCDEFG$ at $A$, and $P$ is a point on $l$ such that triangle $AOP$ is isosceles. Let $p$ denote the value of $AP \cdot BP \cdot CP \cdot DP \cdot EP \cdot FP \cdot GP$. Determine the value of $p^2$.

See also

Mock AIME 1 Pre 2005 (Problems, Source)
Preceded by
Problem 9
Followed by
Problem 11
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