Is there an accepted terminology/notation for the vector $\langle \theta \rangle := \begin{bmatrix} \sin \theta \\ \cos \theta \end{bmatrix}$?

Question

Suppose you start off at a point $A$, walk 10 units at a bearing of $\frac{\pi}{4}$, then walk 25 more at a bearing of $\frac{5\pi}{4}$. The point where you end up is, of course,

$$A+10\left\langle \frac{\pi}{4}\right\rangle+25\left\langle \frac{5\pi}{4}\right\rangle,$$

where $$\langle \theta \rangle := \begin{bmatrix} \sin \theta \\ \cos \theta \end{bmatrix}$$

For pedagogical reasons, it would be nice to have standard notation and/or terminology for what I'm denoting here as $\langle \theta \rangle$.

Question. Are there any standards here?