No. of Direct and Transverse Common Tangents When `|r_1-r_2|lt|C_1C_2| lt r_1+r_2`

No of Direct and Transverse Common Tangents When |C_(1)C_(2)|=r_(1)+r_(2)

No of Direct and Transverse Common Tangents When |C_(1)C_(2)|<|r_(1)-r_(2)|

No of Direct and Transverse Common Tangents When |C_(1)C_(2)|=|r_(1)-r_(2)|

No of Direct and Transverse Common Tangents When |C_(1)C_(2)|>r_(1)+r_(2)

Two circles centres A and B radii r_1 and r_2 respectively. (i) touch each other internally iff |r_1 - r_2| = AB . (ii) Intersect each other at two points iff |r_1 - r_2| ltAB lt r_1 r_2 . (iii) touch each other externally iff r_1 + r_2 = AB . (iv) are separated if AB gt r_1 + r_2 . Number of common tangents to the two circles in case (i), (ii), (iii) and (iv) are 1, 2, 3 and 4 respectively. Number of common tangents to the circles x^2 + y^2 - 6x = 0 and x^2 + y^2 + 2x = 0 is (A) 1 (B) 2 (C) 3 (D) 4

Two circles centres A and B radii r_1 and r_2 respectively. (i) touch each other internally iff |r_1 - r_2| = AB . (ii) Intersect each other at two points iff |r_1 - r_2| ltAB lt r_1 r_2 . (iii) touch each other externally iff r_1 + r_2 = AB . (iv) are separated if AB gt r_1 + r_2 . Number of common tangents to the two circles in case (i), (ii), (iii) and (iv) are 1, 2, 3 and 4 respectively. circles x^2 + y^2 + 2ax + c^2 = 0 and x^2 + y^2 + 2by + c^2 = 0 touche each other if (A) 1/a^2 + 1/b^2 = 2/c^2 (B) 1/a^2 + 1/b^2 = 2/c^2 (C) 1/a^2 - 1/b^2 = 2/c^2 (D) 1/a^2 - 1/b^2 = 4/c^2

Two circles centres A and B radii r_1 and r_2 respectively. (i) touch each other internally iff |r_1 - r_2| = AB . (ii) Intersect each other at two points iff |r_1 - r_2| ltAB lt r_1 r_2 . (iii) touch each other externally iff r_1 + r_2 = AB . (iv) are separated if AB gt r_1 + r_2 . Number of common tangents to the two circles in case (i), (ii), (iii) and (iv) are 1, 2, 3 and 4 respectively. If circles (x-1)^2 + (y-3)^2 = r^2 and x^2 + y^2 - 8x + 2y + 8=0 intersect each other at two different points, then : (A) 1ltrlt5 (B) 5ltrlt8 (C) 2ltrlt8 (D) none of these

Statement-1:If the line y=x+c intersects the circle x^2+y^2=r^2 in two real distinct points then -rsqrt2 lt c lt r sqrt2 Statement -2: If two circles intersects at two distinct points then C_1C_2 lt r_1+r_2