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2000 Harvard-MIT Mathematics Tournament
Problems
(1)
2000 Guts #37: Water spills from a cone
Source:
10/25/2014
A cone with semivertical angle
3
0
ā
30^{\circ}
3
0
ā
is half filled with water. What is the angle it must be tilted by so that water starts spilling?
geometry
3D geometry