# A.I.C.B.S.E. practice - II

Geometry Level 4

Find value of a such that these lines are skew. Given lines are :

$$\frac { x-1 }{ 2 } =\frac { y-2 }{ 3 } =\frac { z-a }{ 4 }$$

$$\frac { x-4 }{ 5 } =\frac { y-1 }{ 2 } ={ z }$$

if your answer is $$\Re -\{ m\}$$

find m

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