Three Dimensional Geometry Question 263
Question: If the product of distances of the point (1, 1, 1) from the origin and the plane $ x-y+z+k=0 $ be 5, then k =
Options:
A) ? 2
B) ?3
C) 4
D) 7
Show Answer
Answer:
Correct Answer: C
Solution:
$ \sqrt{1+1+1},.,( \frac{1-1+1+k}{\sqrt{3}} )=\pm ,5 $ or $ k=\pm ,5-1=4,-,6 $ .
BETA
