Let $\theta$ be the angle between the unit vectors $ \mathbf{a}$ and $ \mathbf{b}$, where

Question

Let $\theta$ be the angle between the unit vectors $ \mathbf{a}$ and $ \mathbf{b}$, where $0 < \theta < \pi$. Express $\vert{}\mathbf{a} - \mathbf{b}\vert{}$ in terms of $\sin \frac{1}{2}\theta$

Accepted Answer

$2\sin\left(\dfrac{\theta}{2}\right)$

Vectors - Scalar (Dot) Product

Vectors - Scalar (Dot) Product

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