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Re: OG Quant: Geometry [#permalink]
20 May 2008, 16:49
First thing I'd like to say is DS with geometry it is rarely C or E, and in this case C should raise some red flags because it is just to damn easy (aka Trap.)
I'm not great with geometry but I'd say with similar triangles here we know they are both right triangles and we know that we have another right triangle at Q because any time you draw a triangle with the diameter as one of the sides you know it will form a right triangle.
So all we need to know is one of the sides A or B.