Khan/khan-exercises — Issue #5783: Inverse trig functions - Inconsistant answer formats
Author: KhanBugz
Created: 2011-11-08 05:52:36+00:00
State: open
Labels: firefox, win7

In the case where the answer is "pi/4", the problem would accept both "pi/4" And "1/4 pi".

However in a case where the answer was "5pi/6", "5/6 pi" was acceptable but "5pi/6" was marked as wrong.

If they always want us to submit the answer as "x/y pi", how come they allow the case of "pi/y" (or when the numerator is 1)

[inverse_trig_functions.html?seed=20&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/inverse_trig_functions.html?seed=20&problem=0&debug)

["1 / 4 pi"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

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