In\[\Delta ABC,\] if \[\cos A+\cos C=4{{\sin }^{2}}\frac{1}{2}B,\] then \[a,b,c\] are in

In\[\Delta ABC,\] if \[\cos A+\cos C=4{{\sin }^{2}}\frac{1}{2}B,\] the

1.	In\[\Delta ABC,\] if \[\cos A+\cos C=4{{\sin }^{2}}\frac{1}{2}B,\] then \[a,b,c\] are in
A.	A. P.
B.	G. P.
C.	H. P.
D.	None of these
Answer» B. G. P.

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In\[\Delta ABC,\] if \[\cos A+\cos C=4{{\sin }^{2}}\frac{1}{2}B,\] then \[a,b,c\] are in

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