Circles
Geometry
Level
2
The ratio of the length of tangents from any point on the circle 15x^2+15y^2-48x+64y=0 to the two circles 15x^2+15y^2-48x+64y+75=0 and 15x^2+15y^2-48x+64y+300=0 is
(3)^1/2:2
1:4
1:(2)^1/2
1:2
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