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

Question id: 361. This question is similar to one that appeared on an IB Standard paper in 2018. The use of a calculator is allowed.

The diagram, not drawn to scale, shows a quadrilateral ABCD.

AB = 7.5cm, BC = 3.6cm, angle DAB = 98^{o}, angle DBA = 49^{o} and angle DBC = 80^{o}

(a) Find DB

(b) Find DC

(c) The area of triangle ABD

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