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Question: Parametric equation of circle x<sup>2</sup> + y<sup>2</sup> – 2ax + 2by + b<sup>2</sup> = 0 is...

Parametric equation of circle x2 + y2 – 2ax + 2by + b2 = 0 is

A

x = a + acosq, y = b + a sinq

B

x = a + acosq, y = b + b sinq

C

x = a + acosq, y = – b + a sinq

D

x = b + acosq, y = a + b sinq

Answer

x = a + acosq, y = – b + a sinq

Explanation

Solution

Centre (a, – b), radii = a

Parametric equations

x = a + a cosq

y = – b + a sinq