If `vec A+vec B=vec C` and the angle between `vec A` and `vec B` is `120^(@)`, then the magnitude of `vec C`

If vec(A) + vec(B) = vec(C ) and A + B = C , then the angle between vec(A) and vec(B) is :

If vec(A) + vec(B) = vec(C ) and A + B = C , then the angle between vec(A) and vec(B) is :

.Vectors vec A , vec B and vec c are shown in figure.Find angle between (i) vec A and vec B . (ii) vec A and vec C . , (iii) vec B and vec C

If vec(a).vec(b) and vec(c ) are unit vectors such that vec(a) is perpendicular to the plane of vec(b) , vec(c ) and the angle between vec(b) and vec(c ) is (pi)/(3) . Then what is |vec(a) +vec(b)+vec(c )| ?

If vec(a) , vec(b), vec(c) are unit vectors such that vec(a) is perpendicular to the plane of vec(b), vec(c) , and the angle between vec(b) and vec(c) is (pi)/(3) Then, what is |vec(a)+vec(b)+vec(c)| ?

Let vec a,vec b,vec c are the three vectors such that |vec a|=|vec b|=|vec c|=2 and angle between vec a and vec b is (pi)/(3),vec b and vec c and (pi)/(3) and vec a and vec c(pi)/(3). If vec a,vec b and vec c are sides of parallelogram

If vec A = vec B+ vec C and the values of vec A, vec B and vec C are 13, 12 and 5 respectively, then the angle between vec A and vec C will be