AP EAMCET · Maths · Circle
If the lengths of the tangents drawn from a point to the three circles and are equal, then the coordinates of are
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Given: S1≡x2+y2-4=0S2≡x2+y2-2x+3y=0S3≡x2+y2+7y-18=0 We know if the length of tangents drawn from an external points to three circles are equal, then that point is the radical centre. First we will find the radical axes which is S1-S2=0 or S2-S3=0 We…
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