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If in a triangle A B C ,acos^2(C/2)+c co...

If in a triangle `A B C ,acos^2(C/2)+c cos^2(A/2)=(3b)/2,` then the sides a ,b , and c

A

(a) A.P.

B

(b) G.P.

C

(c) H.P.

D

(d) A.G.P.

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The correct Answer is:
A
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