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A package of supplies is to be dropped from an airplane so that it hits the ground at a designated spot near some campers. The airplane, moving horizontally at a constant velocity of 145 km/h, approaches the spot at an altitude of 0.440 km above level ground. Having the designated point in sight, the pilot prepares to drop the package.

(a) What should the angle be between the horizontal and the pilot's line of sight to the drop point when the package is released? (Neglect air resistance)

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