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1) Given two vectors A? = 4.20 i^+ 7.20 j^ and B? = 5.80 i^? 2.60...

1) Given two vectors A? = 4.20 i^+ 7.20 j^ and B? = 5.80 i^? 2.60 j^ , find the scalar product of the two vectors A?  and B? .

2) Find the angle between these two vectors.

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