Given vectors I=⟨−1,3⟩ and J=⟨2,4⟩, find the angle between these vectors.

Given vectors M=⟨1,−2⟩ and N=⟨3,4⟩, find the angle between these vectors.

If G=⟨3,2⟩ and H=⟨−1,5⟩, determine the angle between these vectors.

If K=⟨2,1⟩ and L=⟨−3,5⟩, determine the angle between these vectors.

If C=⟨−1,3⟩ and D=⟨2,1⟩, determine the angle between these vectors.

Given vectors Q=⟨3,1⟩ and R=⟨−2,5⟩, find the angle between these vectors.

Given vectors E=⟨1,4⟩ and F=⟨−2,3⟩, find the angle between these vectors.

Given vectors X=⟨1,−2⟩ and Y=⟨3,1⟩, find the angle between these vectors.

If P=⟨2,−3⟩ and Q=⟨4,1⟩, determine the angle between these vectors.

If O=⟨−1,3⟩ and P=⟨2,−4⟩, determine the angle between these vectors.