Question

128. What is the angle between i ^+ j ^+ k ^and j^?
(b) 45°
(a) 0
(s) 60°
(d) None of these

Answer 1

Answer:

(b) 45°

Explanation:

this is the answer

Answer 2

Answer:

45°

Explanation:

this is because the resultant of i^and j^ is perpendicular to k^ and the resultant of (i^+j^)+k^ bisects the angle between i^and j^ (90°) .

so the answer is 45°