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a hillside is inclined at an angle of 30 degrees with the horizontal. how much altitude has mary gained after hiking 40 meters up the hill?
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a hillside is inclined at an angle of 30 degrees with the horizontal. how much altitude has mary gained after hiking 40 meters up the hill?

User Aaronster
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1 Answer

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30-60-90 triangles are 1-sqrt(3)-2 trinagles.

Therefore, 40 * 1/2 = 20 meters altitude.
User Dlondero
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