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Calculate the dot and cross product of v...

Calculate the dot and cross product of `vecA=30` units along east and `vecB=10` units due north east.

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(i) `|vecA|=30 " "|vecB|=10`
`vecA.vecB=AB costheta=30xx10xx45^(@)`
`=(300)/(sqrt2)=150sqrt2` units

(ii) `|vecAxxvecB|=AB sintheta=30xx10xxsin45^(@)`
`=300xx1/sqrt2=150sqrt2` units
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