Which of the following is the unit vector perpendicular to `vec(A)` and `vec(B)`?

In each of the following find a unit a vector perpendicular to both vec (a) and vec (b) vec(a) = (2,1,1) and vec(b) = (1,-1,2)

If vec(c ) is the unit vector perpendicular to both the vector vec(a) and vec(b) , then what is another unit vector perpendicular to both the vectors vec(a) and vec(b) ?

Two vectors vec A and vec B are inclined to each other at an angle theta . Then a unit vector perpendicular to both vec A and vec B

If vec a = -i +j +k, vec b = i-j+k , then a unit vector perpendicular to vec a and vec b is

Vector component of vector vec b perpendicular to vec a is

If vec c is a unit vector perpendicular to vec a and vec b then the second vector perpendicular to vec a and vec b is

If vec a,vec b,vec c are position vector of vertices of a triangle ABC,then unit vector perpendicular to its plane is

If vec c is a unit vector perpendicular to the vectors vec a\ a n d\ vec b write another unit vector perpendicular vec a\ a n d\ vec bdot