Khan/khan-exercises — Issue #15323: Inverse trig functions - Right answer not accepted
Author: KhanBugz
Created: 2012-03-03 23:58:47+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: mariekevaneijk@gmail.com

While according to my calculator and to the solution shown, the right answer to arctan( √3 /3) is 30 degrees. However, the program dosn't accept it as the correct answer.

[inverse_trig_functions.html?seed=166&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=166&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=166&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2230%5C%22%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C9%5D%5D)

["30"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0.1) Gecko/20100101 Firefox/8.0.1

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