In the diagram OABCDEFG is a cube which the lenght of each edge is units. Unit vectors i, j, k are parallel to , , respectively. The mid-points of and are and respectively.
(i) Express each of the vectors and in terms of i, j and k. [3 Marks]
(ii) Find the angle between the directions of and , are correct to the nearest . [4 Marks]
are they right? and will I be rewarded 3 marks for showing no steps? becuase I don't there are any steps needed!
(ii) Need Help!