alleryThe direction cosines of the x-axis are:
A$0, 0, 1$
B$0, 1, 0$
C$1, 0, 0$
D$\tfrac1{\sqrt3},\tfrac1{\sqrt3},\tfrac1{\sqrt3}$
Answer & Solution
Correct answer: C. $1, 0, 0$
The x-axis points along (1,0,0), which are its direction cosines.
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