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if the tangent from (1,1) to the circle x 2 +y 2 -4x+k+0 are perpendicular then k=?

if the tangent from (1,1) to the circle
 x2+y2-4x+k+0 are perpendicular then k=?
 

Grade:12

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4407 Points
4 years ago
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