Khan/khan-exercises — Issue #10587: Trigonometry challenge - cos x to sec x
Author: KhanBugz
Created: 2012-01-07 00:37:56+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: smartbiz.rohan@gmail.com

conversion of
cos x = (sqrt(2))/2 to
sec x = sqrt 2
instead of 2/(sqrt(2))

[trigonometry_challenge.html?seed=108&problem=11 (trig_identities_1)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=108&problem=11&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=108&problem=11&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C78%5D%2C%5B%22hint-activity%22%2C%220%22%2C5%5D%2C%5B%22hint-activity%22%2C%220%22%2C35%5D%5D)

["None of the above."]

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

MathJax is loaded, ready, queue length: 0