In a triangle ABC, the value of sin A + ...

In a triangle ABC, the value of `sin A + sin B+ sin C` is

A

`4sin(A/2)sin(B/2)sin(C/2)`

B

`4cos(A/2)cos(B/2)cos(C/2)`

C

`4cos(A/2)sin(B/2)sin(C/2)`

D

`4cos(A/2)sin(B/2)cos(C/2)`

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