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Co - ordinate Geometry Circles

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Two tangents drawn from the origin to the circle x²+y²+2gx+2fy+c=0 will be perpendicular to each other, if

A. g=f=c²

B. g²+f²=2c

C. g+f=0

D. g-f=0

E. None of the above

View Answer

Correct choice: B

Explanation:

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Eamcet Mathematics Co - ordinate Geometry Circles

Eamcet Mathematics
Co - ordinate Geometry Circles