Question

Find the equation of the circle passing through the points (1.2) (3.-4), (5.-6).​

Answer 1

Equation of circle with center (−1,2) is : (x+1) 2 +(y−2) 2 =r 2

It passes through (5,6)⇒(5+1) 2 +(6−2) 2 =r 2⇒r= 52⇒equation of circle : (x+1) 2 +(y−2) 2=52