If `vec(P)=hat(i)+hat(j)-hat(k)` and `vec(Q)=hat(i)-hat(j)+hat(k)`, then unit vector along `(vec(P)-vec(Q))` is `:`

If vec(P)=hat(i)+2hat(j)+hat(k)andvec(Q)=3hat(i)+hat(j)-hat(k) then vec(P)xxvec(Q) is

If vec(P)=hat(i)+2hat(j)-4hat(k)andvec(Q)=hat(i)+2hat(j)-hat(k) then (vec(P)+vec(Q))*(vec(P)-vec(Q)) is

For vec(a)=hat(i)+hat(j)-2hat(k), vec(b)=-hat(i)+2hat(j)+hat(k) and vec(c)=hat(i)-2hat(j)+2hat(k) , then find the unit vector parallal to vec(a)+vec(b)+vec(c) is ...................... .

If vec(a)=4hat(i)-hat(j)+hat(k) and vec(b)=2hat(i)-2hat(j)+hat(k) , then find a unit vector parallel to the vector vec(a)+vec(b) .

If vec(A)=2hat(i)+hat(j)+hat(k) and vec(B)=hat(i)+hat(j)+hat(k) are two vectors, then the unit vector is

If vec(A)=2hat(i)+hat(j)+hat(k) and vec(B)=hat(i)+hat(j)+hat(k) are two vectors, then the unit vector is

Let vec(P)=2hat(i)+hat(j)-2hat(k) and vec(Q)=4hat(i)-3hat(k) . Find the acute angle between vec(P) and vec(Q) .

If vec(A) = hat(i) + hat(j) + hat(k) and B = -hat(i) - hat(j) - hat(k) . Then angle made by (vec(A) - vec(B)) with vec(A) is :