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Grade: 12

                        

i want a example of ths question because i dont understand properly ….......f c1(x1,y1),c2(x2,y2) then point of contact is given by (r1x2+r2x1 by r1+r2 , r1y2-r2y1 by r1+r2)

3 years ago

Answers : (1)

Deepak Kumar Shringi
askIITians Faculty
4403 Points
							when we draw tangents to two circles the line joining point of contacts to the centres of these two circles divides the line in the ratio of r1:r2 externally and internally for transverse & direct common tangents respectively for an example-
https://www.askiitians.com/iit-jee-coordinate-geometry/common-tangents.aspx
2 years ago
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