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In a triangle ABC, if `(a-b)/(b-c)= (s-a)/(s-c)`, then `r_1,r_2,r_3` are in

A

A.P.

B

G.P.

C

H.P.

D

None of these

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MOTION-SOLUTION OF TRIANGLE-EXERCISE -1
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  12. In a triangleABC if r1 lt r2 lt r3, then

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  13. In a triangle ABC, if (a-b)/(b-c)= (s-a)/(s-c), then r1,r2,r3 are in

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