Three Dimensional Geometry Question 287
Question: The value of $ aa’+,bb’+,cc’ $ being negative the origin will lie in the acute angle between the planes $ an+by+cz+d=0 $ and $ a’x+b’y+c’z+d’=0 $ , if
[MP PET 2003]
Options:
A) $ a=a’=0 $
B) d and $ d’ $ are of same sign
C) d and $ d’ $ are of opposite sign
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
It is obvious.
BETA
