Question

Given A=i+j+k and B=-- j =Ã, then (A-B) will make angle with A
(a) 0°
(b) 180°
(c) 90°
(d) 60°​

Answer 1

Answer:

give A= i+j+Kand B=--j=A,then(A-B) will make angle with A: 90°