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Co - ordinate Geometry Circles

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If the line lx+my=1 be a tangent to the circle x²+y²=a² , then the locus of the point (l, m) is

A. A straight line

B. A Circle

C. A parabola

D. An ellipse

E. None of the above

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Correct choice: B

Explanation:

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Eamcet Mathematics Co - ordinate Geometry Circles

Eamcet Mathematics
Co - ordinate Geometry Circles