Question

The angle between A = iˆ + ˆj and B = iˆ - ˆj
(a) 45° (b) 90°
(c) – 45° (d) 180°

Answer 1

Answer:

90

Explanation:

I+j makes an angle 45 with positive X axis in 1st quadrant

i-j makes an angle 45 with positive X axis but in 4tg quadrant

So angle between two vectors is 90