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$(a,0)$ and $(b,0)$ are center of two circles belonging to a co-axial system of which y-axis is the radical axis. If radius of one of the circles is 'r', then the radius of the other circle is
\[(a)\;(r^2+b^2+a^2)^{1/2}\quad (b)\;(r^2+b^2-a^2)^{1/2} \quad (c)\;(r^2+b^2-a^2)^{1/3} \quad (d)\;(r^2+b^2+a^2)^{1/3} \]
jeemain
eamcet
math
2013
q52
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Sep 16, 2013
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meena.p
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$(b)\;(r^2+b^2-a^2)^{1/2}$
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Nov 7, 2013
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pady_1
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