Polar Coordinates

Worked examples (6)

• 1Polar to Cartesian — a single point
• 2Cartesian to polar — first quadrant
• 3Cartesian to polar — quadrant care
• 4Cartesian equation to polar form
• 5Polar equation to Cartesian — multiply by r
• 6A straight line in polar form

Model answers (6)

• ✓Model answer 1
• ✓Model answer 2
• ✓Model answer 3
• ✓Model answer 4
• ✓Model answer 5
• ✓Model answer 6

Worked examples (6)

• 1Reading off a simple polar circle
• 2Classifying a limaçon
• 3Sketching a cardioid with symmetry
• 4Area of a polar sector — applying ½∫r² dθ
• 5Area of one petal of a rose
• 6Area enclosed by a cardioid

Model answers (6)

• ✓Model answer 1
• ✓Model answer 2
• ✓Model answer 3
• ✓Model answer 4
• ✓Model answer 5
• ✓Model answer 6