Intermediate June 2017 Unit 2 Q16
16. Calculate the length of the side QR in the triangle PQR shown below. [3]
Diagram not drawn to scale
| Scheme | Marks | Comments |
|---|---|---|
| \(\dfrac{\text{QR}}{18}\) = tan24(°) | M1 | OR \(\dfrac{\text{QR}}{\sin 24} = \dfrac{18}{\sin 66}\) |
| QR = 18 × tan24(°) | m1 | QR = \(\dfrac{18 \times \sin 24}{\sin 66}\) |
| = 8(·01..)(cm) | A1 | C.A.O. |