Solid StateHard
Question
Two lines L1: X = 5, 
and 
are coplanar. Then can take value(s)
and are coplanar. Then can take value(s)Options
A.1
B.2
C.3
D.4
Solution
for lines to be coplanar
⇒(5 - α ) ((3 - α) (2- α) - 2) = 0
⇒(5 - α)( α2 - 5α + 4) = 0
⇒ α = 1, 4, 5
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