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[" 22.If "d(1),d(2)(d(2)>,d(1))" be the....

[" 22.If "d_(1),d_(2)(d_(2)>,d_(1))" be the.diameters of two concentric "],[" circles and "c" be the length of a chord of a circle which is "a],[" tangent to the other circle,prove that "d_(2)^(2)=c^(2)+d_(1)^(2)" ."]

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