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Find the angle between two vectors hat...

Find the angle between two vectors
`hatA=2hati+hatj-hatk` and `hatB=hati-hatk`

Text Solution

Verified by Experts

`cos theta=(vecA,vecB)/(|vecA||vecB|)=(2+0+1)/(sqrt(6)sqrt(2))=(1)/(2sqrt(2))sqrt(3)/(2)rArrtheta=30^(@)`
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