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

question 99

Multiple Choice

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

• A) \(\left( \frac { - 5 } { \sqrt { 30 } } , \frac { - 2 } { \sqrt { 30 } } , \frac { - 1 } { \sqrt { 30 } } \right)\)
• B) \(\left( \frac { - 1 } { \sqrt { 30 } } , \frac { - 1 } { \sqrt { 30 } } , \frac { - 1 } { \sqrt { 30 } } \right)\)
• C) \(\left( \frac { 5 } { \sqrt { 30 } } , \frac { 2 } { \sqrt { 30 } } , \frac { 1 } { \sqrt { 30 } } \right)\)
• D) \(\left( \frac { 25 } { \sqrt { 30 } } , \frac { 4 } { \sqrt { 30 } } , \frac { 1 } { \sqrt { 30 } } \right)\)
• E) \(\left( \frac { - 150 } { \sqrt { 30 } } , \frac { - 60 } { \sqrt { 30 } } , \frac { - 30 } { \sqrt { 30 } } \right)\)

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