a. Consider vectors u and v. Find unit vector w in the direction of the cross product vector u ? v. Express your answer using standard unit vectors.
u= <8,-1,2>, v=<2,0,1>
b. Consider vectors u and v. Find unit vector w in the direction of the cross product vector u ? v. Express your answer using standard unit vectors.
u = AB, v = AC,
where A(1, 0, 1), B(1, ?1, 7), and C(0, 0, 9)
calculate the determinant