CBSE Class 12-science Answered
3d geometry
Asked by | 28 Jun, 2009, 11:12: PM
Expert Answer
If we name the given points as A,B,C respectively then for them to be collinear,
the direction ratios of AB, BC,AC must be proportional.
so,
-4-(-1),2-3,-2-2
must be proportional to
5-(-4),5-2,lamda-(-2)
i.e.
(-3/9)=(-1/3)=(-4/lamda+2)
using this we get the value of lamda as
lamda=10
Answered by | 01 Jul, 2009, 09:35: AM
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