If the position vector of the vertices A,B and C of a `DeltaABC` be `(hati + 2hatj + 3hatk), (2hati
Channel: Doubtnut
Date: 2019-12-29

If the position vector of the vertices A,B and C of a `DeltaABC` be `(hati + 2hatj + 3hatk), (2hati + 3hatj + hatk)` and `(3hati + hatj +2hatk)` respectively, prove that `DeltaABC` is equilateral.