Khan/khan-exercises — Issue #9969: Trig identities 1 - Wrong answer...
Author: KhanBugz
Created: 2012-01-01 00:12:52+00:00
State: open
Labels: firefox, vista, wrong-or-unclear

you can't have a square root as a denominator

[trig_identities_1.html?seed=22&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=22&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=22&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C201%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%5D)

["None of the above."]

Mozilla/5.0 (Windows NT 6.0; rv:8.0.1) Gecko/20100101 Firefox/8.0.1

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