Question: 1 . Given the vectors a = 2 i + 4 j 5 k and b = 6 i + 1 0 j + 2

1. Given the vectors a =2i +4j 5k and b =6i +10j +2k. Find (a)a 3b (b)a b (c) Are a and b parallel? Give your reason. (d) Are a and b orthogonal? Give your reason.

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