Find the angle between the pair of lines whose direction ratios are (3, 5, 4) and (1, 1, 2) respectively.
1
\({\sin ^{ - 1}}\left( {\frac{{8\sqrt 3 }}{{15}}} \right)\)
2
\({\cos ^{ - 1}}\left( {\frac{{8\sqrt 3 }}{{15}}} \right)\)
3
\({\cos ^{ - 1}}\left( {\frac{{16\sqrt 3 }}{{15}}} \right)\)
4
\({\sin ^{ - 1}}\left( {\frac{{16\sqrt 3 }}{{15}}} \right)\)
5
None of the above/More than one of the above.