A point A(2,1) is outside the circle x²+ y²+2gx+2fy+c=0 and AP, AQ are tangents to the circle. The equation of the circle circumscribing the triangle APQ is?

Explain your answer.

Here A,P,Q are concyclic with the centre of the circle ‘C’

As CAP is a right angle triangle with right angle at P circumcircle of triangle APQ is the circle with diameter as AC. Hence its equation is

please look into the attached file

thanks

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M.MURALIKRISHNA

ASKIITIANS FACULTY