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Question 1: An airplane is flying at an altitude of 5000 m, and its angle of elevation from a point on the ground is 30 degrees. Calculate the distance from the point on the ground to the airplane.

Question 2: Two towers are of heights 20 m and 40 m, respectively. If the angle of depression from the top of the higher tower to the top of the shorter tower is 45 degrees, find the horizontal distance between the two towers.

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