Khan/khan-exercises — Issue #6520: Trigonometry challenge - its very hard
Author: KhanBugz
Created: 2011-11-17 11:18:35+00:00
State: open
Labels: hard, ie8, ie9, win7

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[trigonometry_challenge.html?seed=63&problem=19 (distance_formula)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=63&problem=19&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=63&problem=19&debug&activity=%5B%5D)

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