Question

The equation of circle with centre (1,2) and tangent x + y - 5= 0 is:
(a) x² + y² + 2x - 4y + 6 = 0
(b) x² + y² - 2x - 4y + 3 = 0
(C) x² + y² - 2x + 4y + 8 = 0
(d) x² + y² – 2x – 4y + 8 = 0​

Answer 1

Step-by-step explanation:

perpendicular distance from centre to tangent is radius so,

perpendicular distance = √2=radius

so the équation be

${(x - 1)}^{2} + {(y -2) }^{2} = 2$

expand the équation

then B is ur answer

mark as brainliest answer