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If a, b,c be the sides foi a triangle AB...

If a, b,c be the sides foi a triangle ABC and if roots of equation `a(b-c)x^2+b(c-a)x+c(a-b)=90` are equal then `sin^2 A/2, sin^2, B/2, sin^2 C/2` are in (A) A.P. (B) G.P. (C) H.P. (D) none of these

A

AP

B

GP

C

HP

D

AGP

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The correct Answer is:
C
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