Choose the correct options for the following questions.
Distance AB between the points A (2,3,4) and B (-5,6,7) is given by:
Difficulty: Hard
A:
7i+9j+11k
B:
-7i-9j-11k
C:
-3i-3j-3k
D:
-7i+3j+3k
If a vector lies in second quadrant, then $B_{x}$ and $B_{y}$ are:
Difficulty: Easy
A:
-,+
B:
+,-
C:
+,+
D:
-,-
If A=2i+3j-4k, then its magnitude will be:
Difficulty: Easy
A:
$\sqrt{-3}$
B:
$\sqrt{-1}$
C:
-1
D:
$\sqrt{29}$
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