Khan/khan-exercises — Issue #8493: Trig identities 1 - fundamental error
Author: KhanBugz
Created: 2011-12-13 01:03:45+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

Reporter: quamashbcs@yahoo.com

Reciprocal of sqrt2/2 is not sqrt2. AFAIK it is 2/sqrt2. This bug also affects several other questions in this unit.

[trig_identities_1.html?seed=152&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=152&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trig_identities_1.html?seed=152&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2

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