direction numbers

direction numbers

[di′rek·shən ‚nəm·bərz]
(mathematics)
Any three numbers proportional to the direction cosines of a line in space. Also known as direction ratios.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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He launched straight into Get Low , his DJ Zedd collaboration, followed by For You , his latest single with Rita Ora, then delivered a well-curated mix of his favourite covers and nostalgic One Direction numbers.

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