`vec(A)+vec(B)` का (i) अधिकतम (ii) न्यूनतम परिमाण कितना होता है

Three vectors vec(A), vec(B), vec(C) are shown in the figure. Find angle between (i) vec(A) and vec(B) (ii) vec(B) and vec(C) (iii) vec(A) and vec(C) .

If vec(a)= 2vec(i) -vec(j) + 3vec(k), vec(b)= p vec(i) + vec(j) + q vec(k) and vec(b) xx vec(a) = vec(0) , then

vec(A) and vec(B) are two vectors such that I vec(A) I = 2 and I vec(B) I = 5. If I vec(A) x vec(B) I = 8 then I vec(A).vec(B) I

.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)= 2vec(i)-3 vec(j) + vec(k). vec(b)= vec(i) + 4vec(j)- 2vec(k) , then find (vec(a) + vec(b)) xx (vec(a) - vec(b)) .