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(C) is 1/2, which is also less than 1, but seems a bit too much less than one since the height seems to be greater than .5
(D) square root 2 = ~1.41
This is greater than 1 so is not correct.
(E) none - I don't think GMAT would give an answer choice of none.
So between (B) and (C), (B) is the better guess and is more reasonable.
So that's your answer - 1 / root 2.
See--even though I didn't exactly calculate it using trigonometry, I was able to arrive at the answer by using the answer choices as a resource to limit the scope of the problem at hand. These are the kind of test strategies you'll need to develop in cases of emergency.
Hope that helps.
Re: Geometry Problem HELPPPPPPPPPP
11 Nov 2011, 08:41