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-A cross-section of a parabolic reflector is shown in the figure.The bulb is located at the focus and the opening at the focus is 18 cm.Find an equation of the parabola.Let be the origin.Find the diameter of the opening
cm from the vertex.
A)
B)
C) The equation is
D)
E) The equation is
F) The equation is
Correct Answer:
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