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Show that the direction cosines of a vec...

Show that the direction cosines of a vector equally inclined to the axes OX,OY and OZ are `+-((1)/(sqrt(3)),(1)/(sqrt(3)),(1)/(sqrt(3)))`.

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The correct Answer is:
`+-(1)/(sqrt(3)),+-(1)/(sqrt(3)),+-(1)/(sqrt(3))`
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