Two concentric circles are of radii a and b (a>b). Length of the chord of the larger circle which touches the small circle is
Two concentric circles are of radii a and b (a>b). Length of the chord of the larger circle which touches the small circle is
(A) \(2\sqrt{a^2-b^2}\)
(B) \(\sqrt{a^2-b^2}\)
(C) \(2\sqrt{a^2+b^2}\)
(D) \(\sqrt{a^2+b^2}\)
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