Vectors veca,vecb and vecc are of the sa...

Vectors `veca,vecb and vecc` are of the same length and when taken pair-wise they form equal angles. If `veca=hati+hatj and vecb=hatj+hatk` then find vector `vecc`.

`hati + hatk`

`hati + 2hatj + 3hatk`

`-hati + hatj + 2hatk`

`1/3(-hati + 4hatj - hatk)`

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