A straight line moves such that the alge...

A straight line moves such that the algebraic sum of the perpendiculars drawn to it from two fixed points is equal to `2k` . Then, then straight line always touches a fixed circle of radius. `2k` (b) `k/2` (c) `k` (d) none of these

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A DAS GUPTA-Coordinates and Straight Lines-EXERCISE

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