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Equation of the common tangent formula in system of circles

Equation of the common tangent formula in system of circles

Grade:10

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
equation of tangent :
 
y = mx ± sqrt (a^2 m^2 + a^2)
 
now for common tangent of two circles use the property that
 
length of perpendicular = radius

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