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6. The number of common tangents that can be drawn to the circle x 2 + y 2 - 4x - 6y – 3 = 0 and x 2 + y 2 + 2x + 2y + 1 = 0 is (a) 1 (b) 2 (c) 3 (d) 4



6.     The number of common tangents that can be drawn to the circle


x2 + y2 - 4x - 6y – 3 = 0 and x2 + y2 + 2x + 2y + 1 = 0  is


(a)    1


(b)    2


(c)    3


(d)    4


Grade:10

1 Answers

Jitender Singh IIT Delhi
askIITians Faculty 158 Points
8 years ago
Ans: 2
Both circles are intersecting with each other, only two common tangents are possible.
TangentsEquation:
x+2 =0
y+1 =0
Thanks & Regards
Jitender Singh
IIT Delhi
askIITians Faculty

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