If `vecA=3hati-2hatj+hatk, vecB =hati-3hatj+5hatk and vecB=hati-3hatj+5hat

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If `vecA=3hati-2hatj+hatk, vecB =hati-3hatj+5hatk and vecB=hati-3hatj+5hatk, vecC=2hati+hatj-4hatk` from a right angled triangle then out of the following which one is satisfied ?
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