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Find the Unit Vector in the Direction of U u={5,2,1}\mathbf { u } = \{ - 5 , - 2 , - 1 \}

Question 99

Multiple Choice

Find the unit vector in the direction of u. u={5,2,1}\mathbf { u } = \{ - 5 , - 2 , - 1 \}


A) (530,230,130) \left( \frac { - 5 } { \sqrt { 30 } } , \frac { - 2 } { \sqrt { 30 } } , \frac { - 1 } { \sqrt { 30 } } \right)
B) (130,130,130) \left( \frac { - 1 } { \sqrt { 30 } } , \frac { - 1 } { \sqrt { 30 } } , \frac { - 1 } { \sqrt { 30 } } \right)
C) (530,230,130) \left( \frac { 5 } { \sqrt { 30 } } , \frac { 2 } { \sqrt { 30 } } , \frac { 1 } { \sqrt { 30 } } \right)
D) (2530,430,130) \left( \frac { 25 } { \sqrt { 30 } } , \frac { 4 } { \sqrt { 30 } } , \frac { 1 } { \sqrt { 30 } } \right)
E) (15030,6030,3030) \left( \frac { - 150 } { \sqrt { 30 } } , \frac { - 60 } { \sqrt { 30 } } , \frac { - 30 } { \sqrt { 30 } } \right)

Correct Answer:

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