Prove that: `("sin"(A-B))/(s in A s in B)+("sin"(B-C))/(s in B s in C)+("sin"(C-A))/(s in C s in A)=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 any triangle ABC, prove that: (a^(2)sin(B-C))/(sin B+sin C)+(b^(2)sin(C-A))/(sin C+sin A)+(c^(2)sin(A-B))/(sin A+sin B)=0

Prove that (a^(2)sin(B-C))/(sin b+sin C)+(b^(2)sin(C-A))/(sin C+sin A)+(c^(2)sin(A-B))/(sin A+sin B)=0

In any Delta ABC, prove that :(a^(2)sin(B-C))/(sin B+sin C)+(b^(2)sin(C-A))/(sin C+sin A)+(c^(2)sin(A-B))/(sin A+sin B)=0

Prove that: (sin(A-C)+2sin A+sin(A+C))/(sin(B-C)+2sin B+sin(B+C))=(sin A)/(sin B)

In any triangle ABC, prove that following: (a^(2)sin(B-C))/(s in A)+(b^(2)sin(C-A))/(s in B)+(c^(2)sin(A-B))/(s in C)=0

Prove that: sin^(2)=sin^(2)+sin^(2)(A-B)-2s in A cos Bs in(A-B)

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

If a/(sinA)=K , then the area of "DeltaA B C" in terms of K and sines of the angles is (K^2)/4s in A\ s in B\ s in C (b) (K^2)/2s in A\ s in B\ s in C 2K^2s in A\ s in B\ "sin"(A+B) (d) none

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