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Mathematics 10 Online
OpenStudy (anonymous):

8. The x-component of the unit vector in the direction [1,-2, z] is 1/3. What is the value of z? a) 1 b) 2 c) 3 d) 4 9. What is the value of β for the vector [2, 4, -6]? a) 74.5 b) 143.3 c) 36.7 d) 57.7

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