, and the distance from the second man is no more than. The distance on a cone means the length of the shortest curve on the conesurface connecting two points.
At the vertex of a cone, two men separated from each other. They walked straight on the cone surface getting higher and higher. They headed in different directions. They established their own kingdoms. Now they are looking backward, and thinking about the answer. What's the size of the area, in which the distance from the first man is no more than r_1 r 1 , and the distance from the second man is no more than r_2 r 2 ? The distance on a cone means the length of the shortest curve on the cone surface connecting two points.
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