If y=mx−b√1+m2 is a common tangent to x2+y2=b2 and (x−a)2+y2=b2, – InterviewSolution

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1.	If y=mx−b√1+m2 is a common tangent to x2+y2=b2 and (x−a)2+y2=b2, where a>2b>0, then the positive value of m is
Answer» If $y = m x - b \sqrt{1 + m^{2}}$ is a common tangent to $x^{2} + y^{2} = b^{2}$ and $(x - a)^{2} + y^{2} = b^{2}$ , where $a > 2 b > 0$ , then the positive value of $m$ is

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