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Foci of a hyperbola
Auteur :
Jonathan Holland
Thème :
Hyberbole
Think of the hyperbola as semi-reflective. Suppose that a lamp is placed at the foci A and B, and an observer at point D. Then the observer will see the one focus on a straight line with the reflected image of the other.
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apec
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畫三角形
Question 6c
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para_transform
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Sine Rule - The Ambiguous Triangle
WheelRotation
Ice Cream Problem Simulation
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