anonymous
  • anonymous
Help please... show that A,B,C are collinear OA=(4,14,-5) OB=(1,2,7) OC= (2,6,3)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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mathmate
  • mathmate
If A,B,C are collinear, unit vectors of AB and BC should be equal (identical), or AB=k*BC where k \(\in\)R. AB=<1-4,2-14,7-(-5))=<-3,-12,12> BC=<2-1,6-2,3-7)=<1,4,-4> I'll leave you to do the second part AB=k*BC.
phi
  • phi
collinear means "lie on the same line" I would show all 3 points lie on the line P= (1,2,7)+ t*(1,4,-4)

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