A = i + j-k; B = 2 i+3j +5k angle between A and Bis
(A) 120°
(B) 90°
(C)60°
Answers
Answered by
5
Answer:
90°
Explanation:
A = I + j - k
B = 2i + 3j + 5k
A.B = ABCos@
2+3- 5= AB Cos@
ABcos@ = 0
Cos@ = 0
@ = π/2
@ = 90°
Similar questions