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Find the angle between each of the following pairs of vectors A? =Axi^+Ayj^ and B? =Bxi^+Byj^ PART A: Ax1= -2

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Find the angle between each of the following pairs of vectors A? =Axi^+Ayj^ and B? =Bxi^+Byj^

PART A: Ax1= -2.20, Ay1= 6.60; Bx1= 2.00, By1= -2.30.

PART B: Ax2= 3.20, Ay2= 6.00; Bx2= 11.8, By2= 6.80.

PART C: Ax3= -4.00, Ay3= 2.00; Bx3= 7.00, By3= 14.00.