Question
Distance between two points: If P(x1, y1 z1) and Q(x2, y2, z2) are two points in space, then prove that distance
Solution
PROOF: Complete the cuboid PABCQRST as shown in figure.
Since
So,
...(i)
Again,
So,
[By (i) and ]
Hence,
Since
So,
...(i)
Again,
So,
[By (i) and ]
Hence,