A) \[aa'+bb'+cc'+1=0\]
B) \[aa'+bb'+cc'=0\]
C) \[(a+a')\,(b+b')+(c+c')=0\]
D) \[aa'+cc'+1=0\]
Correct Answer: D
Solution :
Given equations of the lines are , ... (i) and , , ? (ii) Eqs. (i) and (ii) will be perpendicular to each other, ifYou need to login to perform this action.
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