The direction cosines l, m, n with respect to ____ x-, y-, z- axes respectively.
a) Local
b) Local and global
c) Global
d) Transformation
Answer: c
Explanation: The direction cosines of a vector are the cosines of the angles between the vector and three co-ordinate axes. Direction cosines are analogous extension of the usual notion of the slope and higher dimensions. The direction cosines l, m, n are with respect to global x-,y-, z- axes .
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