Khan/khan-exercises — Issue #9602: Trigonometry challenge - Error 
Author: KhanBugz
Created: 2011-12-27 17:24:43+00:00
State: open
Labels: ie8, other, xp

Problem is not working. I can only see the code for the problem.

[trigonometry_challenge.html?seed=165&problem=25 (graphs_of_sine_and_cosine)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=165&problem=25&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=165&problem=25&debug&activity=undefined)

undefined

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; MathPlayer 2.20; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E)

MathJax is loaded, ready, queue length: 0