`vec(a)+vec(b)+vec(c)=vec(0)` such that `|vec(a)|=3, |vec(b)|=5 and |vec(c)|=7`. What is cosine of the angle between `vec(b) and vec(c)` ?

vec(a)+vec(b)+vec(c)=vec(0) such that |vec(a)|=3, |vec(b)|=5 and |vec(c)|=7 . What is |vec(a)+vec(b)| equal to ?

Let vec(a), vec(b) and vec(c) be three vectors such that vec(a) + vec(b) + vec(c) = 0 and |vec(a)|=10, |vec(b)|=6 and |vec(c) |=14 . What is the angle between vec(a) and vec(b) ?

Vectors vec(a), vec(b) and vec(c ) are such that vec(a) + vec(b) + vec(c ) = 0 and |vec(a)| = 3, |vec(b)| = 5 and |vec(c )| = 7 . Find the angle between vec(a) and vec(b) .

vec(a)+vec(b)+vec(c)=vec(0) such that |vec(a)|=3, |vec(b)|=5 and |vec(c)|=7 . What is vec (a). vec(b) + vec(b). vec(c) + vec(c). vec (a) equal to ?

If vec(a) + vec (b)+vec(c ) = vec (0) and |vec(a)| = 3 , |vec(b)| = 5 and |vec(c)| = 7 , , find the angle between the vectors vec(a) and vec(b)

If vec(a) + vec(b) + vec( c ) = vec(0), |vec(a) | = sqrt( 37), | vec(b)| =3 and | vec( c)| =4 , then the angle between vec(b) and vec(c ) is