Question

proof of parametric equation of circle
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Answer 1

Step-by-step explanation:

y = -f + rsinθ

And, this is the parametric equation of the circle x2 + y2 + 2gx + 2fy + c = 0. Here's a simulation that demonstrates the parametric equation of a circle. You can drag the slider to change the value of θ, and observe the point (rcosθ, rsinθ).