Khan/khan-exercises — Issue #11760: Trig identities 1 - Hi.  I am getting all of the questions right except this one.
Author: KhanBugz
Created: 2012-01-21 01:51:18+00:00
State: open
Labels: chrome, other, vista

Reporter: JonScottBikes@gmail.com

I am pretty sure this answer is wrong. When you have the square root of two over two equals cosine of x and then the next step shows the square root of 2 equal to one over cosine of x. Where does the two go? The answer should be two over the square root of two which equals one over cosine of x. Then Secant equals two over the square root of two. Am I right?

[trig_identities_1.html?seed=108&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=108&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=108&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22None%20of%20the%20above.%5C%22%22%2C21%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C15%5D%5D)

["None of the above."]

Mozilla/5.0 (Windows NT 6.0) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.75 Safari/535.7

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