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From a point P a boy notices that the angle of elevation of the top of a tall building is 45°.

From a point P a boy notices that the angle of elevation of the top of a tall building is 45°. He moves 270m from P to Q and realizes that the new angle of depression is 30°. Given that Q is on the same side of the building as P, find the height of the building.

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Wilfykil answered the question on September 13, 2019 at 09:42

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