Khan/khan-exercises — Issue #11895: Trig identities 1 - Not correct answer
Author: KhanBugz
Created: 2012-01-23 14:20:50+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Solution is reciprocal value of cosX which in this case is root of 2 / 2, and sec is 1/cosx.... So isn't secx= 1/(root of 2 over 2), which in the end gives 2 over root of 2

[trig_identities_1.html?seed=199&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=199&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=199&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C132%5D%2C%5B%22correct-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%20%5C%5C%5C%22%3E%5C%5C%5C%5Csqrt%202%3C%2Fcode%3E%5C%22%22%2C61%5D%5D)

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

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.75 Safari/535.7

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