Test Academy | If the directions cosines of a line are A, k, k, then k > 0, 0 < k < 1, k = 1, k = 1/√3 or

Question

If the directions cosines of a line are A, k, k, then

Options :

k > 0
0 < k < 1
k = 1
k = 1/√3 or – (1/√3)

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