In any `DeltaABC`, prove that `b^2 sin 2C + c^2 sin 2B = 2bc sin A = 4Delta`

In triangle ABC , prove that b^2sin2C+c^2sin2B=2bcsinA .

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

In any DeltaABC, sum a^(2) (sin^2 B - sin^2 C) =

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

In DeltaABC ,prove that: sin2A + sin2B-sin2C=4cosA cosB sinC

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

lf in DeltaABC,b^(2)sin 2C + c^(2) sin 2B = 2bc,then the triangle is

If Delta denotes the area of DeltaABC , then b^(2) sin 2C + c^(2) sin 2B is equal to

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

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