## Exam Style Question## Worked solutions to typical exam type questions that you can reveal gradually |

Question id: 46. This question is similar to one that appeared in an IB Standard paper. The use of a calculator is allowed.

This graph represents the function \(f:x\to a \cos x, a\in \mathbf N\)

(a) Find the value of \(a\).

(b) Find the area of the shaded region.

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