Question: answer all 9. If W = (4,5) is projected onto the x-axis, what is the scalar projection? [2 marks] 10. Sketch the vector OF =

answer all

9. If W = (4,5) is projected onto the x-axis, what is the scalar projection? [2 marks] 10. Sketch the vector OF = (6,4,2) then determine than angle it makes with the z-axis. [2 marks] 11. Find a vector perpendicular to both a = (3,4, 2) and b= (6,5,8) . [2 marks] 12. Find the area of AABC where A(3,6,2), B(5,3,1) and C(2, 7,4) . [5 marks]

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