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OpenStudy (anonymous):
question about an elipse. if im given the height the width and the lenght, does if matter which i use to calculate the foci?
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OpenStudy (dumbcow):
well the foci are +-c from center. c^2 = a^2 - b^2 you need both the length and width to find foci. length of major axis = 2a length of minor axis or width = 2b
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