VectorHard
Question
Consider two lines L1 : 
& L2 : 
where λ & μ are parameters & 
& 
are unit vectors inclined with each other at an angle 60o, then -
& L2 : where λ & μ are parameters & & are unit vectors inclined with each other at an angle 60o, then -Options
A.L1 & L2 are coplanar
B.L1 & L2 are intersecting
C.L1 & L2 are non-coplanar
D.Angle between L1 & L2 is cos-1
Solution
for λ = μ = - 1
point of intersection of lines is (-
× 
)
If angle between lines is θ, then
cos θ =
cos θ =
cos θ =
point of intersection of lines is (-
× )If angle between lines is θ, then
cos θ =
cos θ =
cos θ =
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