I have a question on vectors which probably doesn't belong here but I can't see an appropriate place to post it. If anyone has a better idea please tell me.
Please see image attached:
In the diagram, OABCDEFG is a cuboid in which the length of OA is 4 units, AB is 3 units and BF is 2 units. Unit vectors i, j, and k are parallel to OA, OC and OD respectively. The midpoints of AB and FG are M and N respectively.
a) Express each of the vectors ON and MG in terms of i, j, and k.
I would start this problem by finding ON→=OD→+DG→+1/2GN→
I have place the arrow to the right of the signs as I can't put them above it.
Am I doing the right thing anyone?
b) Find the acute angle between the direction of ON and MG, correct to the nearest 0.1°.
Will tackle this next.