SOLUTION: Find a unit vector in the direction of the given vector W=4j W= i-2j

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Question 929585: Find a unit vector in the direction of the given vector
W=4j
W= i-2j
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Just divide by the magnitude of the given vector.
abs%28W%29=4
u%5BW%5D=j
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abs%28W%29=sqrt%281%5E2%2B4%5E2%29=sqrt%2817%29
u%5BW%5D=%281%2Fsqrt%2817%29%29i-%282%2Fsqrt%2817%29%29j
u%5BW%5D=%28sqrt%2817%29%2F17%29i-%282%2F17%29sqrt%2817%29j