In any `DeltaABC`, prove that
`(sin(A-B))/(sin(A+B))=(a^(2)-b^(2))/c^(2)`

In any DeltaABC , prove that (sinA)/(sin(A+B))=a/c

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

In any DeltaABC , prove that asin(A/2+B)=(b+c)sin""A/2

In any DeltaABC , prove that, (b^(2)-c^(2))/a^(2)sin2A+(c^(2)-a^(2))/b^(2)sin2B+(a^(2)-b^(2))/c^(2)sin2C=0 .

In a DeltaA B C prove that cos ((A+B)/2)=sin (C/2).

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

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

In DeltaABC , prove that: (a-b)/c=(sin(A-B)/(2))/(cosC/2)

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

In any DeltaABC , prove that a^(3)sin(B-C)cosec^(2)A+b^(3)sin(C-A)cosec^(2)B+c^(3)sin(A-B)cosec^(2)C=0