circle

Question: The length 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) $\sqrt{4{{c}^{2}}-2{{(a-b)}^{2}}}$

2) $\sqrt{4{{c}^{2}}+2{{(a-b)}^{2}}}$

3) $\sqrt{4{{c}^{2}}-2{{(a+b)}^{2}}}$

4) $\sqrt{4{{c}^{2}}+2{{(a+b)}^{2}}}$

Solution:

Explanation: No Explanation

Chord of contact of tangent Pole and Polar

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