what is the formula of a common tangent if radius is given of two circle??
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equation of radius is given or its magnitude only?
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Common Tangents - Study Material for IIT JEE | askIITians For finding direct common tangents of two circles, find the point P dividing the line joining the centre externally in the ratio of the radii. Equation of direct common tangents is SS1 = T2 where S is the equation of one circle.
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Equation of direct common tangents is SS1 = T2 where S is the equation of one circle.
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