If a line has the direction ratios (2, -3, 4) then its direction cosines are
1
\( \left( {\frac{{ 2}}{{\sqrt {25} }},\frac{{-3}}{{\sqrt {25} }},\frac{{ 4}}{{\sqrt {25} }}} \right)\)
2
\( \left( {\frac{{ 2}}{{\sqrt {29} }},\frac{{3}}{{\sqrt {29} }},\frac{{ 4}}{{\sqrt {29} }}} \right)\)
3
\( \left( {\frac{{ 2}}{{\sqrt {29} }},\frac{{-3}}{{\sqrt {29} }},\frac{{ 4}}{{\sqrt {29} }}} \right)\)
4
None of the above