The horizontal unit vectors i and j are direction due east and north respectively.
A mountain rescue post O receives a distress call via a mobile phone from a walker who has broken a leg and cannot move. The walker says that he is by a pipeline and he can also see a radio mast which he believes to be south-west of him. The pipeline is know to run north-south for a long distance through the point with position vector 6i km, relative to O. The radio mast is known to be at the point with position vector 2j km, relative to O.
(a) Using the information supplied by the walker, write down his position vector in the form (ai + bj).
Can anyone please help me with this question. The answer i got is (6i+2j). I am very lost... Can anyone please draw a diagram to help?? Thanks.