Find a Polar Equation of the Conic with Focus at the Pole

question 16

Multiple Choice

Find a polar equation of the conic with focus at the pole that has the eccentricity and equation of directrix. $e = 1$ , $r \cos \theta = 7$

• A) \(r = \frac { 7 } { 1 + 2 \cos \theta }\)
• B) \(r = \frac { 3 } { 1 + \sin \theta }\)
• C) \(r = \frac { 7 } { 1 - \cos \theta }\)
• D) \(r = \frac { 7 } { 1 + \cos \theta }\)
• E) \(r = \frac { 3 } { 1 - \cos \theta }\)

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