In two concentric circles prove that all chords of the outer circle which touch the inner circle are of equal length.

In two concentric circles prove that all chords of the outer circle wh

1.	In two concentric circles prove that all chords of the outer circle which touch the inner circle are of equal length.
Answer» `In/_AOC` `OC^2+AC^2=OA^2` `r_1^2+AC^2=r_2^2` `AC=sqrt(r_2^2-r_1^2)` `AB=2sqrt(r_2^2-r_1^2)` AC=BC AB`_\|_`BC C is mid point of AB length of chord is constant =`2sqrt(r_2^2-r_1^2)`.

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In two concentric circles prove that all chords of the outer circle which touch the inner circle are of equal length.

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