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In a certain ellipse, the center is at $(-3,1),$ one focus is at $(-3,0),$ and one endpoint of a semi-major axis is at $(-3,3).$ Find the semi-minor axis of the ellipse.

 Mar 15, 2020
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The distance between the center and the focus (-3,0)  is 1 Also, the semi-major axis is the distance between the center and the endpoint of the semi-major axis, which is  Then the semi-minor axis is b=\sqrt{a^2-c^2}=\sqrt{3}

 Mar 15, 2020

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