Question: Given |a| = 3, |b| = 2 and a b = 5 find |a + 2b| and |3a b|. Find the angle between

Given |a| = 3, |b| = 2 and a · b = 5 find |a + 2b| and |3a – b|. Find the angle between the vectors a + 2b and 3a – b.

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