Find a Polar Equation of the Conic with Its Focus $( 10 , \pi / 2 )$

question 3

Multiple Choice

Find a polar equation of the conic with its focus at the pole. ​
Conics
Vertex or vertices
Parabola $( 10 , \pi / 2 )$ ​

• A) \(\frac { 20 } { 1 - \sin \theta }\)
• B) \(\frac { 20 } { 1 + \sin \theta }\)
• C) \(\frac { 20 } { 1 - \cos \theta }\)
• D) \(\frac { 20 } { 1 + \cos \theta }\)
• E) \(\frac { - 20 } { 1 - \sin \theta }\)

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