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Mathematics, 10.03.2021 16:00 kukisbae

From the top of a tower 80m high, a girl observes that the angle of depression of the top of a vertical pole A is 45° and the angle of depression of a point B on the pole is 60°. If P is the foot of the pole and PB = 20m. Find the distance between A and B. Leave your answer in surd form.

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