question_answer

The angle between the lines\[2x=3y=-z\]and \[6x=-y=-4z\]is     AIEEE  Solved  Paper-2005

A) \[30{}^\circ \]                   

B)        \[45{}^\circ \]   

C)        \[90{}^\circ \]   

D)        \[0{}^\circ \]

Correct Answer: C

Solution :

If and are DR?s of two lines, then the angle between them is given by The Given equations can be rewritten as and \[\therefore \] Angle between the lines is given by