Question

obtain the equation of circle with centre at (-5,3)and radius 7

Answer 1

Step-by-step explanation:

Centre ( -g , -f ) = ( -5 , 3)

So , g = 5 & f = -3

radius = 7

√g²+f²- c = 7

g² + f² - c = 49

25 + 9 - c = 49

c = 34 - 49 = -15

Equation of circle -

x² + y² + 2gx + 2fy + c = 0

x² + y² + 10x - 6y - 15 = 0