Find the value of λ, so that the lines 1-x/3 ...

CBSE Class 12 Math 2019 Delhi Set 1 Solved Paper

Question : 23 of 29

Marks: +1, -0

Find the value of

\lambda

, so that the lines

\frac{1-x}{3} = \frac{7y-14}{\lambda} = \frac{z-3}{2}

and

\frac{7-7x}{3\lambda} = \frac{y-5}{1} = \frac{6-z}{5}

are at right angles. Also, find whether the lines are intersecting or not.

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