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English: Examples of Shang dynasty oracle bone script characters which were rotated 90 degrees as if to fit on narrow vertical bamboo slat books. This is a snapshot of a document which I, Kent Suarez, TYPED myself, thus being my creation, in Microsoft Word using fonts made available for public use by the Academia Sinica's Chinese Document Processing Laboratory (CDPL) under the Institute of ...
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Original file (SVG file, nominally 500 × 150 pixels, file size: 7 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
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 .
Elevation is 90 degrees (= π / 2 radians) minus inclination. Thus, if the inclination is 60 degrees (= π / 3 radians), then the elevation is 30 degrees (= π / 6 radians). In linear algebra , the vector from the origin O to the point P is often called the position vector of P .
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