Questions
If the direction ratios of two perpendicular straight lines are given by , then
detailed solution
Correct option is C
The lines having direction ratios a1,b1,c1and a2,b2,c2are perpendicular then a1a2+b1b2+c1c2=0Hence,4θ+θ4−θ2+7θ=0θ3−θ+11=0θ−θ311=1Therefore, Tan−1θ−θ311=π4Talk to our academic expert!
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Angle between the lines whose direction ratios are a,b,c and is
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