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IF in triangle ABC a cos ^2 ((C )...

IF in triangle ABC ` a cos ^2 ((C )/(2 )) c cos ^2 ((A) /(2 )) = (3 b)/(2)` then the sides a,b,and c

A

are in G.P

B

are in H.P

C

satisfy a+ b =c

D

are in A.P

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The correct Answer is:
D
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