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

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Question: Answered & Verified by Expert

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

MathematicsCircleTS EAMCETTS EAMCET 2021 (06 Aug Shift 1)

Options:

A $x=y$ or $x=-y$
B does not exist
C any line passing through $(0,0)$
D their common tangent at $(0,0)$

Solution:

2709 Upvotes Verified Answer

The correct answer is: their common tangent at $(0,0)$

Their common tangent at $(0,0)$.

It is obvious.

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