In a DeltaABC , if a b and c are in AP ,...

In a `DeltaABC` , if a b and c are in AP ,then the value of `("sin"(A)/(2)"sin"(C)/(2))/("sin"(B)/(2))` is:
a)`1` b)`2` c)`1/2` d)`-1`

A

1

B

2

C

`1/2`

D

`-1`

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The correct Answer is:

C

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