Question

Let a line pass through the origin and make equal angles with the coordinate axes. Then the direction cosines of the line are:

A (1/√2, 1/√2, 0)
B (1/√3, 1/√3, 1/√3)
C (1/2, 1/2, 1/2)
D (1/√6, 1/√3, 1/2)
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