Khan/khan-exercises — Issue #12315: Trigonometry challenge - The Question Won't Accept the Correct Answer
Author: KhanBugz
Created: 2012-01-27 21:04:54+00:00
State: open
Labels: ie8, win7, wrong-or-unclear

Although the answer box states the answer is -45, when I type it in, it won't accept it.

[trigonometry_challenge.html?seed=127&problem=6 (inverse_trig_functions)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=127&problem=6&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/trigonometry_challenge.html?seed=127&problem=6&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22-1%2F2%20pi%5C%22%22%2C15%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-1%2F4%20pi%5C%22%22%2C5%5D%2C%5B%22incorrect-activity%22%2C%22%5C%227%2F4%20pi%5C%22%22%2C12%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C7%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-45%5C%22%22%2C13%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-45%5C%22%22%2C5%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-45%5C%22%22%2C2%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-45%5C%22%22%2C2%5D%2C%5B%22incorrect-activity%22%2C%22%5C%22-45%5C%22%22%2C16%5D%5D)

["-1/2 pi","-1/4 pi","7/4 pi","-45","-45","-45","-45","-45"]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)

MathJax is loaded, ready, queue length: 0