Questions  

The lines x=py+q,z=ry+s and x=p1y+q1,z=r1y+s1 are perpendicular if

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By Expert Faculty of Sri Chaitanya
ctaimg
a
pp1+rr1=0
b
pp1+rr1=1
c
pp1+rr1+1=0
d
pp1=rr1+1
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detailed solution

Correct option is C

x−qp=y1=z+sr;x−q1p1=y1=z+s1r1a1a2+b1b2+c1c2=0


ctaimg

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