Question
A man is standing at a point 40 meters away from a
tower. The angle of elevation of the top of the tower from the point is 45Ā°. After walking 20 meters towards the base of the tower, the angle of elevation becomes 60Ā°. Find the height of the tower.Solution
Let the height of the tower be h. Using tan(45Ā°) = height / distance from the tower tan(45Ā°) = h / 40 Since tan(45Ā°) = 1, we get: h = 40 meters. Correct answer: a
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