1.

C_(1): x^(2) + y^(2) = 25, C_(2) : x^(2) + y^(2) - 2x - 4y -7 = 0 be two circle intersecting at A and B then

Answer»

Equation of common CHORD is `x + 2y - 9 = 0`
Equation of common chord is `x + 2y + 7 = 0`
Point of INTERSECTION of tangents at A and B to `C_(1) is ((25)/(9), (50)/(9))`.
`C_(1),C_(2)` have four common tangents

Answer :A::C


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