Question: With steps pls 15. 12 For the vectors a = i + j -k, b = 2i + 3j + k, find the following: a)

With steps pls

15. 12 For the vectors a = i + j -k, b = 2i + 3j + k, find the following: a) 2a + b b) lal and |b| c) a . b d) The angle between a and b. Give your answer in degrees, rounded to two decimal places

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