Question: 11. Given that |a| = 2 and b - 4 and the angle between them is 30, determine the exact value of (3a - 4b)

11. Given that |a| = 2 and b - 4 and
the angle between them is 30, determine the exact value of (3a

11. Given that |a| = 2 and b - 4 and the angle between them is 30, determine the exact value of (3a - 4b) . (2a + b)

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