The length of the chord intercepted by the circle ${{x}^{2}}+{{y}^{2}}={{r}^{2}}$ on the line $\frac{x}{a}+\frac{y}{b}=1$ is

Question

Accepted Answer

$2\sqrt{\frac{{{r}^{2}}({{a}^{2}}+{{b}^{2}})-{{a}^{2}}{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}}$

Answer

$\sqrt{\frac{{{r}^{2}}({{a}^{2}}+{{b}^{2}})-{{a}^{2}}{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}}$

Answer

$2\frac{\sqrt{{{r}^{2}}({{a}^{2}}+{{b}^{2}})-{{a}^{2}}{{b}^{2}}}}{{{a}^{2}}+{{b}^{2}}}$

Answer

None of these

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