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Question Number 199723 by cortano12 last updated on 08/Nov/23

	Answered by deleteduser1 last updated on 08/Nov/23

	$S u p p o s e A B C D i s a s q u a r e$ $T h r o u g h P, l e t t h e l i n e p a r a l l e l t o B C m e e t A B$ $a t F; t h e n P F = 8 \Rightarrow \frac{s i n (2 α)}{1} = \frac{4}{5}$ $\Rightarrow c o s (2 α) = \frac{3}{5} = \frac{A F}{10} \Rightarrow A F = 6 \Rightarrow P C = 2$
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