1.

If the direction consines of a line are \[\left( \frac{1}{c},\frac{1}{c},\frac{1}{c} \right)\] then

A. \[0<c<1\]
B. \[c>2\]
C. \[c>0\]
D. \[c=\pm \sqrt{3}\]
Answer» E.


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