1.

The direction cosines of a line which makes equal angles with the coordinate axes is/are (a) 1√3,1√3,1√3(b) ±1√3,±1√3,±1√3(c) −1√3,−1√3,−1√3(d) ±13,±13,±13

Answer» The direction cosines of a line which makes equal angles with the coordinate axes is/are
(a) 13,13,13(b) ±13,±13,±13(c) 13,13,13(d) ±13,±13,±13


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