Khan/khan-exercises — Issue #7160: Inverse trig functions - formatting costs too much - frustrating
Author: KhanBugz
Created: 2011-11-28 02:25:08+00:00
State: open
Labels: chrome, other, win7

I might suggest having more variation in the answer format, or a prompt that pops up when an answer is not in the suggested format that can be changed without losing any experience. (e.g 2pi/3 = 2/3 pi)

Laura

[inverse_trig_functions.html?seed=131&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=131&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=131&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%223pi%2F2%5C%22%22%2C37%5D%2C%5B%22incorrect-activity%22%2C%22%5C%222pi%2F3%5C%22%22%2C35%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22pi%202%2F3%5C%22%22%2C162%5D%2C%5B%22hint-activity%22%2C%220%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C16%5D%2C%5B%22hint-activity%22%2C%220%22%2C17%5D%2C%5B%22hint-activity%22%2C%220%22%2C17%5D%2C%5B%22hint-activity%22%2C%220%22%2C18%5D%2C%5B%22hint-activity%22%2C%220%22%2C18%5D%2C%5B%22correct-activity%22%2C%22%5C%222%2F3%20pi%5C%22%22%2C26%5D%5D)

["3pi/2","2pi/3","pi 2/3","2/3 pi"]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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