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GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
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Re: m or 15 [#permalink]
Notice the first triangle is a 3-4-5 triangle so x = 30 degrees.

In the second triangle, we want to find the side opposite to angle x. We know that a*sqrt{3} = 10 so a = 10*sqrt{3}/3.

Now using the Pythagorean formula, m^{2} = 10^{2} + (10*sqrt{3}/3)^{2} --> m = sqrt{100 + 100/3} = 11.5 < 15. So answer is Qty B.
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Re: Quantitative reasoning [#permalink]
sandy wrote:

The first triangle and the second triangle are similar. Both of them are right triangle and both the triangles have one angle equal to \(x\) degrees.


The first triangle and the second triangle are similar-how? please explain
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Re: m or 15 [#permalink]
we can not assume both triangle---right?
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Re: m or 15 [#permalink]
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