Question

If |A|= 2 and |B|= 4 and angle b/w them is 60°, then |A-B| will be?

Answer 1

|A-B|=root A^2+B^3-2ABcos60=root4+16-16×1/2......
|A-B|=root12.......answer....hope it helpsyou bro.....@mathemagician