A plane is 6000m in height from the ground. The angle between the plane and the distant lighthouse with the horizontal plane is 30 °. The height of the lighthouse is ignored. How many kilometers is the distance from the plane to the lighthouse?
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A$$6\sqrt{2}$$
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B$$6000\sqrt{2}$$
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C12
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D$$12\sqrt{2}$$
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E12000
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正确答案: E