Khan/khan-exercises — Issue #14682: Inverse trig functions - won't accept answer
Author: KhanBugz
Created: 2012-02-26 07:25:40+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

[inverse_trig_functions.html?seed=76&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=76&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=76&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22-pi%2F6%5C%22%22%2C18%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-30%5C%22%22%2C38%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-15%5C%22%22%2C18%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C7%5D%2C%5B%22hint-activity%22%2C%220%22%2C9%5D%2C%5B%22hint-activity%22%2C%220%22%2C13%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-30%5C%22%22%2C18%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-pi%2F6%5C%22%22%2C12%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-30%5C%22%22%2C25%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22%E2%88%9230%C2%B0%5C%22%22%2C9%5D%5D)

["-pi/6","-30","-15","-30","-pi/6","-30","−30°"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20100101 Firefox/10.0.2

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