Find the standard matrix of the linear transformation
T. R² -> R² rotates points (about the origin) through 3/4π radians (with counterclockwise rotation for a positive angle).
A. [ -1 -1 ]
[ 1 -1 ]
B. [ -√3/3 - √3/3 ]
[ √3/3 -√3/3 ]
C. [ -√2/2 - √2/2 ]
[ √2/2 - √2/2 ]
D. [ √2/2 - √2/2 ]
[ √2/2 - √2/2 ]
