Three Dimensional Geometry Question 206
Question: If $ \frac{x-1}{l}=\frac{y-2}{m}=\frac{z+1}{n} $ is the equation of the line through (1, 2, ?1) and (?1, 0, 1), then (l, m, n) is
[MP PET 1992]
Options:
A) (?1, 0, 1)
B) (1, 1, ?1)
C) (1, 2, ?1)
D) (0, 1, 0)
Show Answer
Answer:
Correct Answer: B
Solution:
$ \frac{-2}{l}=\frac{-2}{m}=\frac{2}{n} $ ;
$ \therefore (l,m,n) $ are $ (1,1,-1) $ .
BETA
