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8. Given that |a| = 3, a - 2b = 14.04, and the angle formed by a and b is 450. Determine [b). [5] 9.
8. Given that |a| = 3, a - 2b = 14.04, and the angle formed by a and b is 450. Determine [b). [5] 9. F1 has a magnitude 6 N and acts in the direction N60W. F2 has a magnitude 9 N and acts in the direction S30 E. Find the magnitude and direction of the resultant. 10. Let u = (3,0, -2) , v = (4, -1,4) , and W = (0, -3,7) Then find the following: a) a unit vector in the direction opposite to u [3] b) (-4w - v).v [2] c) The angle between V and W (to the nearest tenth of a degree) [3]
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