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Polar Equations of Conics
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Directrix is perpendicular to the polar axis at a distance p units to the left of the pole Directrix is perpendicular to the polar axis at a distance p units to the right of the pole Directrix is parallel to the polar axis at a distance p units above the pole Directrix is parallel to the polar axis at a distance p units below the pole
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Polar Equations of Conics Eccentricity If e = 1, the conic is a parabola; the axis of symmetry is perpendicular to the directrix If e < 1, the conic is an ellipse; the major axis is perpendicular to the directrix If e > 1, the conic is a hyperbola; the transverse axis is perpendicular to the directrix
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Parabola Directrix: x = -p Focus: Pole Directrix: x = p Focus: Pole Directrix: y = p Focus: Pole Directrix: y = -p Focus: Pole
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Hyperbola
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Hyperbola (cont.)
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Ellipse
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Ellipse (cont.)
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1. Identify the conic that each polar equation represents. Also, give the position of the directrix (Similar to p.423 #7-12)
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2. Identify the conic that each polar equation represents. Also, give the position of the directrix (Similar to p.423 #7-12)
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3. Identify the conic that each polar equation represents. Also, give the position of the directrix (Similar to p.423 #7-12)
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4. Graph the equation (Similar to p.423 #13-24)
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5. Graph the equation (Similar to p.423 #13-24)
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6. Graph the equation (Similar to p.423 #13-24)
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7. Graph the equation
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8. Convert each polar equation to a rectangular equation (Similar to p.424 #25-36)
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9. Convert each polar equation to a rectangular equation (Similar to p.424 #25-36)
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10. Convert each polar equation to a rectangular equation (Similar to p.424 #25-36)
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