Question

.
Ā + B
If A and B are two non-zero vectors such that A+ BI =
N+
and I Āl = 21B I then the angle between A and B is
O 37
O 530
O cos-1 (-3/4)
O cos-1 (-4/3)

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Answer 1

Answer:

answer:::::: o 530 !

Answer 2

Answer:

I don't know but you can search on