The Eccentricity Is Given of a Conic Section with One $r = \frac { 18 } { 1 + 2 \sin \theta }$

question 86

Multiple Choice

The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section.
-e = 2, x = 9

• A) \(r = \frac { 18 } { 1 + 2 \sin \theta }\)
• B) \(r = \frac { 18 } { 1 + 9 \cos \theta }\)
• C) \(r = \frac { 18 } { 1 + 2 \cos \theta }\)
• D) \(r = \frac { 18 } { 1 - 2 \cos \theta }\)

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