Khan/khan-exercises — Issue #7212: Trig identities 1 - Root in Denominator
Author: KhanBugz
Created: 2011-11-28 21:40:06+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Reporter: rraab@ualberta.ca

Are you allowed to have a root in the denominator?

I was taught differently in school but this is saying it's correct to have root in denominator.

[trig_identities_1.html?seed=147&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=147&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=147&problem=0&debug&activity=%5B%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%5Cfrac%7B2%7D%7B%5C%5C%5C%5Csqrt%203%7D%3C%2Fcode%3E%5C%22%22%2C70%5D%5D)

["\\frac{2}{\\sqrt 3}"]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.41 Safari/535.7

MathJax is loaded, ready, queue length: 0