Question: 6. Let be the angle between the nonzero vector u and vin R or R. Show that if u and v are parallel, thencos @

6. Let be the angle between the nonzero vector u and

6. Let be the angle between the nonzero vector u and vin R or R. Show that if u and v are parallel, thencos @ = +1. 7. Show that the only vector x in R or that is orthogonal in every other vector is the zero vector. (101) (11121

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