Direction ratios of a vector ?

Asked by  | 10th Oct, 2008, 08:02: AM

Expert Answer:

 The angles a, b , c  made by a vector  r with the positive directions of x, y and z-axes respectively are called its direction angles. The cosine values of these angles, i.e., cosa, cos  b and cosc are called direction cosines of the vector r  denoted by l, m and n,respectively.The numbers lr, mr and nr, proportional to the direction
cosines are called as direction ratios of vector  r

Answered by  | 10th Oct, 2008, 10:02: AM

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