Mathematics, 25.04.2020 04:27, keltaylor
Find a unit vector in the direction of the vector left bracket Start 3 By 1 Matrix 1st Row 1st Column negative 8 2nd Row 1st Column 7 3rd Row 1st Column negative 2 EndMatrix right bracket
−8
7
−2
.
A unit vector in the direction of the given vector is left bracket Start 3 By 1 Matrix 1st Row 1st Column nothing 2nd Row 1st Column nothing 3rd Row 1st Column nothing EndMatrix right bracket
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(Type exact answers, using radicals as needed.)
Answers: 2
![\left[\begin{array}{c}-\frac{8}{\sqrt{117} } \\\frac{7}{\sqrt{117} }\\\frac{2}{\sqrt{117} }\end{array}\right]](/tpl/images/0626/7167/060ea.png)
![\left[\begin{array}{c}-8\\7\\2\end{array}\right]](/tpl/images/0626/7167/d0b7c.png)
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