The distance between the chords of contact of the tangents to the circle ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ from the origin and the point $(g,f)$ is

Question

Accepted Answer

$\frac{1}{2}\left( \frac{{{g}^{2}}+{{f}^{2}}-c}{\sqrt{{{g}^{2}}+{{f}^{2}}}} \right)$

Answer

$\left( \frac{{{g}^{2}}+{{f}^{2}}-c}{\sqrt{{{g}^{2}}+{{f}^{2}}}} \right)$

Answer

$\frac{1}{2}\left( \frac{{{g}^{2}}+{{f}^{2}}-c}{{{g}^{2}}+{{f}^{2}}} \right)$

Answer

None of these

circle