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[Maximum mark: 6] The following diagram shows part of the graph of y = cos x for OS x $ 2 _ Regions A and

[Maximum mark: 6] The following diagram shows part of the graph of y = cos x for OS x $ 2 _ Regions A and B are shaded 4M (a) Calculate the area of A. (b) Find the total area of the shaded regions in the form a- VB 2

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