743 u should do the divide by three trick
Complete Question
The complete question is shown on the first and second uploaded image
Answer:
a

b

c

Step-by-step explanation:
Now looking at the diagram
Following the direction of the unit vectors

=> 
And
jjj
=> 
Also

=> 
B is the correct awnser i soppose i am truing to help so i rlly am wishing you the best!
Answer:
Hi, It's A
Step-by-step explanation:
Just trust me! Hope this helps