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D.Vvab31. From a point on the ground 400 m away from the base of a tower, the measure of tanule of elevation of the top of the tower is 30. Then, the height of the tower is .A 200 2 Bin the gven figure. AB, AC and PO are tangents to o (O. r). If AB 3, then the00 C. 200,3 D. 100v2

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