A) (a, 1, c)
B) (a, b ? d, c)
C) (c, 1, a)
D) (b, ac, d)
Correct Answer: A
Solution :
\[x-ay-b=0\] and \[cy-z+d=0\] \[\therefore \,\] If l, m, n are direction cosines, then \[\frac{l}{a}=\frac{m}{1}=\frac{n}{c}\]. Hence direction ratios are (a, 1, c).
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