circle

Question: The equation of the common chord of the circles ${{(x-a)}^{2}}+{{(y-b)}^{2}}={{c}^{2}}$ and ${{(x-b)}^{2}}+{{(y-a)}^{2}}={{c}^{2}}$ is

1) $x-y=0$

2) $x+y=0$

3) $x+y={{a}^{2}}+{{b}^{2}}$

4) $x-y={{a}^{2}}-{{b}^{2}}$

Solution:

Explanation: No Explanation

Chord of contact of tangent Pole and Polar

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