Khan/khan-exercises — Issue #5928: Graphs of sine and cosine - Graphs of sine and cosine
Author: KhanBugz
Created: 2011-11-10 00:59:47+00:00
State: open
Labels: firefox, vista

This exercise series does not end; I did more than twenty (20) exercises correctly, but it keeps showing "Correct! Next Question..." Very strange (?)

[graphs_of_sine_and_cosine.html?seed=84&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphs_of_sine_and_cosine.html?seed=84&problem=0&debug)

[["2","cos","1"]]

Mozilla/5.0 (Windows NT 6.0; rv:8.0) Gecko/20100101 Firefox/8.0

MathJax is loaded, ready, queue length: 0