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Let veca=2vecj+vecj-2veck,vecb=veci+vecj...

Let `veca=2vecj+vecj-2veck,vecb=veci+vecj.` If `vecc` is a vector such that `veca.vecc=|vecc|,|vecc-veca|=2sqrt(2)` and the angle between `vecaxxvecb` and `vecc` is `30^(@)`. Find the value of `|(vecaxxvecb)xxvecc|`

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