1.

In any `DeltaABC`, prove that `"a sin (B - C) + bsin(C - A) + csin(A - B)=0`.A. `0`B. `a+b+c`C. `a^(2)+b^(2)+c^(2)`D. `2(a^(2)+b^(2)+c^(2))`

Answer» Correct Answer - A


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