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(b) Suppose that you know that the vectors v and r are unit vectors in three space. Also, suppose . 7T . . you know

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(b) Suppose that you know that the vectors v and r are unit vectors in three space. Also, suppose . 7T . . you know that the measure of the angle between vector v and vector 1' 1s E radlans. Flnd the exact value of v - r . (c) Find parametric equations for the line that passes through the points (1,1,1) and (4,2,1)

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