Khan/khan-exercises — Issue #10696: Inverse trig functions - Trig function range description
Author: KhanBugz
Created: 2012-01-09 00:10:17+00:00
State: open
Labels: firefox, vista, wrong-or-unclear

Reporter: phillipzhao.meng@gmail.com

There is no description of the range in the inverse trig functions, e.g. whether to put -30 deg or 150 deg.

[inverse_trig_functions.html?seed=88&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=88&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=88&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%225%2F6%20pi%5C%22%22%2C195%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%5D)

["5/6 pi"]

Mozilla/5.0 (Windows NT 6.0; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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