Find a Polar Equation of the Conic with Its Focus $e = 1$

question 5

Multiple Choice

Find a polar equation of the conic with its focus at the pole. ​
Conics
Eccentrity
Directrix
Parabola $e = 1$ $y = - 2$ ​
​

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

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