Given a matrix representing a proper rotation ((Cn)) operation in a two-dimensional space, with a rotation angle (\(\theta\)), what is the character of this matrix?
1
\((2\cos(\theta) + 1)\)
2
\((2\cos(\theta) - 1)\)
3
\((\cos(\theta) + 1)\)
4
\((2\cos(\theta))\)
5
Question Not Attempted