## Exam-Style Question on Trigonometry## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 51. This question is similar to one that appeared on an IB Standard paper in 2014. The use of a calculator is allowed.

In the diagram above (not drawn to scale), AB=12mm, BC=8mm and angle ABC=123^{o}

(a) Find the length of side AC.

(b) Find angle BAC.

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