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Direction cosines and Direction Ratios in 3D - Definitions & Examples

Duration: 02:41Views: 62KLikes: 1.3KDate Created: Nov, 2019

Channel: Bifrost

Category: Education

Tags: three-dimensional geometrydirection cosinesdirection ratiosdirection cosines and direction ratiosclass113d videomathvector componentsclass 12defination & example

Description: Direction Ratios. If a, b, c are three numbers proportional to the direction cosine l, m, n of a straight line, then a, b, c are called its direction ratios. They are also called direction numbers or direction components. where the same sign either positive or negative is to be chosen throughout.

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