The tangents drawn from the origin to the circle x2+y2−2rx−2hy+h2= – InterviewSolution

1.	The tangents drawn from the origin to the circle x2+y2−2rx−2hy+h2=0 are perpendicular then sum of all possible values of hr is ___
Answer» The tangents drawn from the origin to the circle $x^{2} + y^{2} - 2 r x - 2 h y + h^{2} = 0$ are perpendicular then sum of all possible values of $\frac{h}{r}$ is ___

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