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Find a Unit Vector in the Direction Of u=1,2,3\vec { u } = \langle 1,2,3 \rangle

Question 83

Multiple Choice

Find a unit vector in the direction of u=1,2,3\vec { u } = \langle 1,2,3 \rangle


A) 151,251,351\left\langle \frac { 1 } { 51 } , \frac { 2 } { 51 } , \frac { 3 } { 51 } \right\rangle
B) 114,214,314\left\langle \frac { 1 } { \sqrt { 14 } } , \frac { 2 } { \sqrt { 14 } } , \frac { 3 } { \sqrt { 14 } } \right\rangle
C) 1,1,7\langle 1,1 , \sqrt { 7 } \rangle
D) 19,29,39\left\langle \frac { 1 } { 9 } , \frac { 2 } { 9 } , \frac { 3 } { 9 } \right\rangle

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