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Multiple Choice
Convert each equation to its polar form. x2+y2=2y
A
r=2
B
r=2sinθ
C
r=4sinθ
D
r=2cosθ
Verified step by step guidance
1
Step 1: Recall the relationship between Cartesian coordinates (x, y) and polar coordinates (r, θ). The formulas are: x = r * cos(θ) and y = r * sin(θ). Additionally, x² + y² = r².
Step 2: Start with the given equation x² + y² = 2y. Substitute x² + y² with r², as x² + y² = r² in polar coordinates. This gives r² = 2y.
Step 3: Replace y with its polar form, y = r * sin(θ). Substituting this into the equation gives r² = 2 * r * sin(θ).
Step 4: Simplify the equation by dividing both sides by r (assuming r ≠ 0). This results in r = 2 * sin(θ).
Step 5: The polar form of the equation is now expressed as r = 2 * sin(θ). This is the final polar representation of the given Cartesian equation.