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Given vecA=(2hati-hatj+3hatk) and vecB=3...

Given `vecA=(2hati-hatj+3hatk)` and `vecB=3hati-3hatj-2hatk` find the unit vector of`(vecA+vecB)`.

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`(vecA+vecB)=(2hati-hatj+3hatk)+(3hati-2hatj-2hatk)=5hati-3hatj+hatk=vecC(say) therefore C=[5^2+(-3)+1]^(1/2)=sqrt35`
unit vector `hatC=vecC//C=5hati-3hatj+hatk//sqrt35`
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