Question

find a unit vector that is orthogonal to both i+j and i+k

Answer 1

u take the croos- product of the 2 given vectors and then divide that vector by its magnitude to get its unit vector.

Answer 2

(i-j-k)/sqrt(3) is the vector required.

Answer 3

well the magnitude doesn't matter because we are just looking for "a" vector that is othogonal

Answer 4

err...i guess she asked for a 'unit' vector :)