In quadrilateral $BCED$, sides $\overline{BD}$ and $\overline{CE}$ are extended past $B$ and $C$, respectively, to meet at point $A$. If $BD = 8$, $BC = 3$, $CE = 1$, $AC = 19$ and $AB = 13$, then what is $DE$?
What is DE?
The lines extended from BD and CE form triangle ABC.
AB=13, AC=19, BC=3.
The following holds: |AC-AB| < BC.
Therefore, there is no triangle with side lengths {13, 19, 3}.
The question does not yield a sine answer.
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+1297 
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