[17." In any "Delta ABC," prove that "],[(a)/(sin A)=(b)/(sin B)=(c)/(sin C)]

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

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)

If A,B and C are the vetices of a triangle ABC, then prove sine rule (a)/(sin A)=(b)/(sin B)=(c)/(sin C)

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

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