Find a Polar Equation for the Conic $e = \frac { 1 } { 2 } ;$

question 155

Multiple Choice

Find a polar equation for the conic. A focus is at the pole.
- $e = \frac { 1 } { 2 } ;$ directrix is perpendicular to the polar axis 2 to the left of the pole

• A) \(r = \frac { 4 } { 4 - 2 \cos \theta }\)
• B) \(r = \frac { 8 } { 4 + 2 \cos \theta }\)
• C)\( r = \frac { 8 } { 4 - 2 \cos \theta }\)
• D) \(r = \frac { 4 } { 4 + 2 \cos \theta }\)

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