Question

the angle between vectors A = i+ j and B = i- j​

Answer 1

Answer:

90 degrees

Explanation:

the vector i+j can be represented on argand plane by a point(1,1) and vector i-j by (1,-1). The angle between them is angle betweem their representations on argand plane. Hence the answer is 90 degrees or (-90) in terms of anticlockwise notation from A to B.