 #1
 158
 6
Homework Statement
so I was going over my notes on classical mechanics and just started to review rotation matrices which is the first topic the book starts with. On page 3, I've uploaded the page here
The rotation matrix associated with 1.2a and 1.2b is
\begin{pmatrix}
\cos\theta & \sin\theta \\
\sin\theta & \cos\theta \\
\end{pmatrix}
but when I try to derive the matrix by following the unit vectors ##\hat i## and ##\hat j##
I get
\begin{pmatrix}
\cos\theta & \sin\theta \\
\sin\theta & \cos\theta \\
\end{pmatrix}
The one that the book derives would be clockwise rotation, and the one I got would be for counterclockwise rotation correct?
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