TS EAMCET · Maths · Circle
A circle passes through the points . If its centre lies on the line , then its radius is equal to
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Let the equation of circle be x2+y2+2gx+2fy+c=0 So centre will be -g,-f and given centre lie on x-y+3=0, So g-f=3 or g=f+3 .......1 Aslo given cirlce is passing through 1,2 & 3,4, So 2g+4f+c=-5 ......2 And 6g+8f+c=-25 ........3 Now solving…
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