A rotation of the stress element through an angle of θ corresponds to a point on Mohr’s circle rotated through an angle of 2θ in Mohr’s plane from the x-axis. Carefully study the three components of stress as we move CCW around Mohr's circle and the corresponding rotation of the stress element. Pay particular attention to the signs and the magnitudes of these components - do these agree with your understanding of stress transformations and Mohr's circle?

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