Prove that:
`sinAsin(B-C)+sinBsin(C-A)+sinCsin(A-B)=0`

In any triangle ABC,prove that a sin (B-C)+b sin(C-A)+c sin(A-B)=0

In any triangle ABC, prove that: a sin(B-C)+bs in(C-A)+c sin(A-B)=0

In DeltaABC , prove that: asin(B-C)+bsin(C-A)+csinA-B)=0

Prove that: sin(A+2B)sinA-sinBsin(2A+B)sinB=sin(A+B)sin(A-B)

Prove that in any Delta ABC,a sin(B-C)+b sin(C-A)+c sin(A-B)=0

prove that (b-c)sin A+(c-a)sin B+(a-b)sin C=0

Prove that: (sin(A-B))/(s in As in B)+(sin(B-C))/(s in Bs in C)+(sin(C-A))/(s in Cs in A)=0

In DeltaABC if sinA.sin(B-C)= sinC.sin(A-B),then-(A!=B!=C) (A) tanA, tanB, tanC are in arithmetic progression (B) cotA, cotB, cotC are in arithmetic progression (C) cos2A, cos2B, cos2C are in arithmetic progression (D) sin2A. sin2B. sin2C are in arithmetic progression

Prove that: (sin(B-C))/(cos B cos C)+(sin(C-A))/(cos C cos A)+(sin(A-B))/(cos A cos B)=0

In any Delta ABC , prove that a("sin B - sin C")+b("sin C - sinA")+c("sinA - sinB")=0 .