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TS EAMCET · Maths · Circle

If two circles touch at \((0,0)\) externally, then their radical axis is

  1. A \(x=y\) or \(x=-y\)
  2. B does not exist
  3. C any line passing through \((0,0)\)
  4. D their common tangent at \((0,0)\)
Verified Solution

Answer & Solution

Correct Answer

(D) their common tangent at \((0,0)\)

Step-by-step Solution

Detailed explanation

Their common tangent at \((0,0)\). It is obvious.