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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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Addition within Two Places
Converting Angle Measures Between Degrees and Radians
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Malfatti's Problem - Malfatti's Own Solution
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Altitudes of a triangle
Subtracting Mixed Numbers
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