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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def rotated(self, angle_degrees_ccw):
 """Concatenates a rotation matrix on this matrix"""

        angle = angle_degrees_ccw / 180.0 * pi
        c, s = cos(angle), sin(angle)
        return self @ PdfMatrix((c, s, -s, c, 0, 0))