- #1
LagrangeEuler
- 717
- 20
Happy new year. Why everybody uses this definition of rotation matrix[tex]R(\theta) = \begin{bmatrix}
\cos\theta & -\sin\theta \\[0.3em]
\sin\theta & \cos\theta \\[0.3em]
\end{bmatrix}[/tex]
? This is clockwise rotation. And we always use counter clockwise in mathematics as a positive direction
[tex]R(\theta) = \begin{bmatrix}
\cos\theta & \sin\theta \\[0.3em]
-\sin\theta & \cos\theta \\[0.3em]
\end{bmatrix}[/tex]
\cos\theta & -\sin\theta \\[0.3em]
\sin\theta & \cos\theta \\[0.3em]
\end{bmatrix}[/tex]
? This is clockwise rotation. And we always use counter clockwise in mathematics as a positive direction
[tex]R(\theta) = \begin{bmatrix}
\cos\theta & \sin\theta \\[0.3em]
-\sin\theta & \cos\theta \\[0.3em]
\end{bmatrix}[/tex]