1.

Find the number of possible common tangent that exits for the following pairs of circle. (a)x^(2) + y ^(2) -4x -2y +1= 0, x^(2) +y^(2) -6x -4y +4=0 (b)x^(2) + y ^(2)-4 x + 2y -4=0 , x^(2) + y ^(2)+ 2x - 6y + 6=0

Answer»


ANSWER :` therefore ` NUMBER of common tangents of (1) & (2) = 3


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