the two vectors \(\vec{A}\) and \(\vec{B}\) are drawn from a common point and \(\vec{C}=\vec{A}+\vec{B}\)
If C2=A2+B2, the angle between vector A and B is 90\(^{\circ}\)
If C2 <A2+B2, the angle between vector A and B is greater than 90\(^{\circ}\)
If C2 >A2+B2, the angle between vector A and B is between 0\(^{\circ}\)and 90\(^{\circ}\)
If C=A-B, angle between the vectors A and B is 180\(^{\circ}\)