In this system, when the positive x-axis is rotated counterclockwise
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VECTOR ALGEBRA
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into the positive y-axis, a right handed (standard) screw would advance in the direction
of the positive z-axis (Fig 10 22(i)) In a right handed coordinate system, the thumb of the right hand points in the
direction of the positive z-axis when the fingers are curled in the direction away from
the positive x-axis toward the positive y-axis (Fig 10 22(ii))