Card 29 / 36: For the vectors A= 4 i + 2 j + 8 k and B = 3i-2 j - 7 k, where i, j, and k are unit vectors in a rectangular coordinate system, perform the following task. From the formula A · B = cos(q) ||A|| ||B||, calculate q.
A)
2.3 radians
B)
84.3 degrees
C)
0.843 degrees
D)
38.4 degrees
E)
3.84 radians
Answer:
A) 2.3 radians
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