Mock Set 1 Paper 02 Calculator

\begin{aligned} &\text{In right-angled } \triangle ABC,\; \angle C = 37^{\circ}\text{ and the side adjacent to }\angle C\text{ is }BC=19\ \text{cm}.\\ &\tan(37^{\circ}) = \frac{\text{opposite}}{\text{adjacent}} = \frac{AB}{19}.\\ &AB = 19\tan(37^{\circ}) \approx 19 \times 0.7536 = 14.317\ldots\ \text{cm}.\\ &\text{To 3 s.f.: } 14.3\ \text{cm}. \end{aligned}