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

In any Delta ABC, prove that (sin B)/(sin(B+C))=(b)/(a)

In triangle ABC , prove that (sin(A-B))/(sin(A+B))=(a^2-b^2)/(c^2) .

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

In any Delta ABC, prove that: (sin B)/(sin C)=(c-a cos B)/(b-a cos C)

In any Delta ABC ,prove that (sin B)/(sin C)=(c-a cos B)/(b-a cos C)

In a Delta ABC prove that cos((A+B)/(2))])=(sin C)/(2)

For any triangle ABC, prove that (sin(B-C))/(sin(B+C))=(b^(2)-c^(2))/(a^(2))

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

In any Delta ABC, prove that (sin A)/(a)=(sin B)/(b)=(sin C)/(c) by vecter method.

In any Delta ABC, prove that ”a cos”(B-C)/2=(b+c) “sin” A/2