Example 1-3-14 - Maple Help



Chapter 1: Vectors, Lines and Planes



Section 1.3: Dot Product



Example 1.3.14



 If A and B are unit vectors with $\mathrm{θ}$ the angle between them, show that $\mathrm{sin}\left(\mathrm{θ}/2\right)=\frac{1}{2}∥\mathbf{A}-\mathbf{B}∥$.