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Answer : 3 66.6 mts Explanation : Answer: C) 66.6 mts Explanation: From above diagramAC represents the hill and DE represents the towerGiven that AC = 100 mangleXAD = angleADB = 30° (∵ AX || BD ) angleXAE = angleAEC = 60° (∵ AX || CE)Let DE = hThen, BC = DE = h, AB = (100-h) (∵ AC=100 and BC = h), BD = CEtan 60°=AC/CE =