Equation OI DCT IS
24
***13. Find the transverse common tangents of the
circles
x2 + y2 - 4x - 10y + 28 = 0 and
x² + y² + 4x – 6y+4=0
(Mar-2017, 2014, 2013, 2008, 2005)
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Method 1 : First find point of intersection of tangents by section formula. Use (T)^2=(S)*(S1) to get the equation of pair of tangents and then solve it to get two equations separately. ...
Method 2 : Assume the point of intersection of common tangents to be P(h, k). And then form equation of tangent as (y-k) =m(x-h).
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