The line which passes through the origin and intersects the two lines x−12=y+34=z−53,x−42=y+33=z−44is
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a
x1=y−3=z5
b
x−1=y3=z5
c
x1=y3=z−5
d
None of these
answer is D.
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Detailed Solution
If the lines r¯=a¯+sb¯,r=c¯+td¯ intersect then c¯-a¯b¯d¯=0 Let xα=yβ=zγ be the equation of required line -13-5243αβγ=0⇒29α-7β-10γ=0 →14-34234αβγ=0⇒12α+4β-9γ=0 →2 From (1) and (2) α103=β141=γ200∴ The line is x103=y141=z200