A) \[\frac{\pi }{6}\]
B) \[\frac{\pi }{3}\]
C) \[\frac{\pi }{4}\]
D) \[\frac{\pi }{2}\]
Correct Answer: D
Solution :
[d]: The d.r? s of the first line are \[\frac{1}{3},\frac{1}{6},\frac{1}{2}\]...(i) The second line is along the vector The d.rs are - 5, 7, 1 ?(ii) From (i) and (ii)\[\Rightarrow \]\[-\frac{5}{3}+\frac{7}{6}+\frac{1}{2}=0\]. \[\therefore \]The lines are perpendicular.You need to login to perform this action.
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