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Length of Chord of Contact

The number of...

Question

The number of common tangents(s) to the circles $x^{2} + y^{2} + 2 x + 8 y - 23 = 0 a n d x^{2} + y^{2} - 4 x - 10 y + 19 = 0$ is

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Solution

The correct option is C
3

Distance between the centres is equal to sum of their radii

No. of tangents 3

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