For broader coverage of this topic, see Rotations in two dimensions.
In mathematics, a rotation of axes in two dimensions is a mapping from an xy-Cartesian coordinate system to an x′y′-Cartesian coordinate system in which the origin is kept fixed and the x′ and y′ axes are obtained by rotating the x and y axes counterclockwise through an angle . A point P has coordinates (x, y) with respect to the original system and coordinates (x′, y′) with respect to the new system.[1] In the new coordinate system, the point P will appear to have been rotated in the opposite direction, that is, clockwise through the angle . A rotation of axes in more than two dimensions is defined similarly.[2][3] A rotation of axes is a linear map[4][5] and a rigid transformation.
^Protter & Morrey (1970, p. 320)
^Anton (1987, p. 231)
^Burden & Faires (1993, p. 532)
^Anton (1987, p. 247)
^Beauregard & Fraleigh (1973, p. 266)
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