Find the direction cosines of the x axis.

0, 0, 0

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0, 1, 0

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1, 0, 0

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0, 0, 1

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Solution

The correct option is C
1, 0, 0

The x-axis makes angles 0^o, 90^o and 90^o respectively with x, y and z-axis.
Therefore, the direction cosines of x-axis are cos 0^o, cos 90^o, cos 90^o i.e., 1, 0, 0.

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