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Consider a triangle ABC satisfying ...

Consider a triangle ABC satisfying
`2asin^(2)((C)/(2))+2csin^(2)((A)/(2))=2a+2c-3b`
Sin A , sin B , sin C are in

A

G . P

B

A . P

C

H . P

D

Neither in G . P . Nor in A . P nor in H . P

Text Solution

Verified by Experts

The correct Answer is:
B
As we have already proven 2b = a +c as -
a= R sin A
b = R sin B
c = R sin C
`rArr` 2 (R sinB) = R sinA+ sinC)
2 sin B = sin A + sin C
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