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Co - ordinate Geometry Circles

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The equation of the tangent to the circle x²+y²-2x-4y-4=0 which is perpendicular to 3x-4y-1=0, is

A. 4x+3y-5=0

B. 4x+3y+25=0

C. 4x-3y-5=0

D. 4x+3y-25=0

E. None of the above

View Answer

Correct choice: D

Explanation:

Tangent is of form 4x+3y+ c=0. From condition of tangency to the circle, we get c= -25. Hence equation is 4x+3y-25=0.

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Eamcet Mathematics Co - ordinate Geometry Circles

Eamcet Mathematics
Co - ordinate Geometry Circles