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

In any o+ABC, prove that: 2{a sin^(2)(C)/(2)+csin^(2)(A)/(2)}=a+c-b

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

In any DeltaABC , prove that a^(2)sin(B-C)=(b^(2)-c^(2))sinA

In any Delta ABC, prove that b^(2)sin2C+c^(2)sin2B=2bc sin A=4Delta

In any DeltaABC , prove that a(bcosC-c cosB)=(b^(2)-c^(2))

In any DeltaABC , prove that ((a+b))/csin""C/2=cos""((A-B))/2

In any DeltaABC , prove that ((b-c))/acosA/2=sin((B-C))/2

In any Delta ABC, prove that :a cos A+b cos B+c cos C=2a sin B sin C

In DeltaABC , prove that: sin(B-C)/(2)=(b-c)/(a).cosA/2

In any DeltaABC , prove that ((a-b))/c"cos"C/2="sin"((A-B))/2