Teaching RPSC School Lecturer Mock Test Series 2024 Mathematics Three Dimensional Geometry Angle between two lines
Find the angle between the lines whose direction ratios (3, -2, 1) and (4, 5, 7) ?
1
\( {\cos ^{ - 1}}\left( {\frac{1}{{2\sqrt {35} }}} \right)\)
2
\({\cos ^{ - 1}}\left( {\frac{3}{{2\sqrt {35} }}} \right)\)
3
\({\cos ^{ - 1}}\left( {\frac{7}{{2\sqrt {35} }}} \right)\)
4
None of these
5
Question Not Attempted