Khan/khan-exercises — Issue #6478: Trig identities 1 - wrong answer
Author: KhanBugz
Created: 2011-11-16 21:09:05+00:00
State: open
Labels: firefox, wrong-or-unclear

I think the answer should be (cos x = 1/squareroot of 2) not (cos x = squareroot of 2 / 2)

[trig_identities_1.html?seed=59&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=59&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=59&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%5C%5C%5C%22%3E%5C%5C%5C%5Csqrt%202%3C%2Fcode%3E%5C%22%22%2C116%5D%2C%5B%22correct-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C114%5D%5D)

["\\sqrt 2","None of the above."]

Mozilla/5.0 (X11; Linux i686; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

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