If \( (a-b)(s-c)=(b-c)(s-a) \), then \( r_{1}, r_{2}, r_{3} \) are in....
If \( (a-b)(s-c)=(b-c)(s-a) \), then \( r_{1}, r_{2}, r_{3} \) are in
P
(1) H.P
(2) G.P
(3) A.P
(4) None of these
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