Asked by George
Find a unit vector u in the direction opposite of ⟨−3,−9,−9⟩.
Answers
Answered by
Damon
go east instead of west
go north instead of south
go up instead of down
so unit vector in direction of (3 , 9 , 9 )
sqrt(9+2*81) = sqrt171
so
(3/sqrt171 , 9/sqrt171 , 9/sqrt171)
go north instead of south
go up instead of down
so unit vector in direction of (3 , 9 , 9 )
sqrt(9+2*81) = sqrt171
so
(3/sqrt171 , 9/sqrt171 , 9/sqrt171)
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