Answer:
3) -3/2
Explanation:
 and B cap are two unit vectors, hence the dot product is |A||B|cosø = cosø. this cannot be out of the limits [-1,1].
Hence option 3 is not possible.
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Answer:
3) -3/2
Explanation:
 and B cap are two unit vectors, hence the dot product is |A||B|cosø = cosø. this cannot be out of the limits [-1,1].
Hence option 3 is not possible.