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Source: — Data Sufficiency |
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by beny » Mon Aug 27, 2007 3:02 pm
It's a 30-60-90 so knowing any side allows you to solve for any other side.

Answer D.
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by radhika1306 » Mon Aug 27, 2007 5:07 pm
can u explain?
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by beny » Mon Aug 27, 2007 6:18 pm
Properties of triangles. The side opposite the 30 degree angle is x, the side opposite the 60 degree angle is x*sqrt(3), the hypotonuse is 2x.

In this case, x=5. JL=5*sqrt(2).

Draw out the triangle.
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by radhika1306 » Thu Aug 30, 2007 11:57 am
got it , thanks
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