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" 8.Show that "sum a^(3)cos(B-C)=3abc...

" 8.Show that "sum a^(3)cos(B-C)=3abc

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In DeltaABC" show that "suma^(3)cos(B-C)=3abc

Show that suma^3cos(B−C) =3abc

In a /_ABC, show that sum a sin(B-C)=0

In Delta ABC,sum a^(3)sin(B-C)

In Delta ABC prove that sum a^3 sin(B-C)= 0

In /_\ABC show that a^3cos(B-C)+b^3cos(C-A)+c^3cos(A-B)=3abc

In Delta ABC, prove that a^(3)cos(B-C)+b^(3)cos(C-A)+c^(3)cos(A-B)=3abc

In any triangle ABC, prove that: a^(3)cos(B-C)+b^(3)cos(C-A)+c^(3)cos(A-B)=3abc

In any DeltaABC , prove that a^(3)cos(B-C)+b^(3)cos(C-A)+c^(3)cos(A-B)=3abc

In any DeltaABC , prove that a^(3)cos(B-C)+b^(3)cos(C-A)+c^(3)cos(A-B)=3abc