A) \[cc'+a+a'=0\]
B) \[aa'+c+c'=0\]
C) \[bb'+cc'+1=0\]
D) \[ab'+bc'+1=0\]
Correct Answer: B
Solution :
Equation of 1st line is \[\frac{x-b}{a}\,\,=\,\,\frac{y}{1}\,\,=\,\,\frac{z-d}{c}\] Equation of 2nd line is \[\frac{x-b'}{a'}=\frac{y-b'}{c'}=\frac{z}{1}\] Lines are perpendicular so that \[aa'+\text{ }c+c=0\]You need to login to perform this action.
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