If the parametric of form of a circle is...

If the parametric of form of a circle is given by
(a) `x=-4+5costhetaandy=-3+5sintheta`
(b) `x=acosalpha+bsinalphaandy=asinalpha-bcosalpha` find its cartesian form.

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The correct Answer is:

(i) `x^2+y^2+8x+6y=0` (ii) `x^2+y^2=a^2+b^2`

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