Find the angle in radians between the vectors v⃗ =(4,4) and w⃗ =(1,2)

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02-12-2017
Mathematics

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Find the angle in radians between the vectors v⃗ =(4,4) and w⃗ =(1,2)

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Hi I need help with this question please thank you!

chudung1976 chudung1976 · Answer 1 · 2017-12-02T14:29:42+01:00

chudung1976 chudung1976

02-12-2017

we have the formula with the dot product of two vectors
We call that angle is a, so cosa= (4x1+4x2):(√16+16. √1+4)= 12:4√10= 3/√10

The result is cosa=3/√10

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