Posted by qwertyuiop on .
the angle between i +j and i is
a. pi/6
b. pi/2
c. pi/3
d. pi/2

physics 
Steve,
i+j is at pi/4
i is at 0
I don't see a correct choice.
Now, if you are asking about +j and +i, that would be pi/2 
physics 
qwertyuiop,
k thx a lot