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Grade: 11
        The equations of the normals to the circle x2 + y2 -8x -2y + 12 = 0 at the points whose ordinate is -1, wiii be (1)2x-y-7=0,2x+y-9=o (2)2x+y-7=0,2x+y+9=0 (3)2x+y+7=0,2x+y+9=0 (4)none of these
2 years ago

Answers : (1)

Vijay Mukati
askIITians Faculty
2590 Points
							Dear Student,

From the given ordinate, find the absicca by satisfying the equation of circle.

Then to find the equn of normal, you can find the center of circle which will help you in find the equn of normal very easily using the two point form of straight line equation.

Thanks, Vj
2 years ago
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