Khan/khan-exercises — Issue #11927: Graphs of sine and cosine - Penalty For Wrong Answers Too High
Author: KhanBugz
Created: 2012-01-23 21:23:43+00:00
State: open
Labels: firefox, other, win7

Again, I do know and understand this concept, but I've made a couple silly mistakes at times where I've got the correct amplitude and the correct function choosen, but messed up the period. But the penalty for getting it wrong is the same as if I didn't understand the concept at all.

[graphs_of_sine_and_cosine.html?seed=194&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphs_of_sine_and_cosine.html?seed=194&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphs_of_sine_and_cosine.html?seed=194&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5B%5C%221.5%5C%22%2C%5C%22sin%5C%22%2C%5C%222%5C%22%5D%22%2C20%5D%5D)

[["1.5","sin","2"]]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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