| Exam Board | OCR |
|---|---|
| Module | H240/03 (Pure Mathematics and Mechanics) |
| Year | 2019 |
| Session | June |
| Marks | 2 |
| Paper | Download PDF ↗ |
| Topic | Sine and Cosine Rules |
| Type | Basic sine rule application |
| Difficulty | Easy -1.2 This is a straightforward application of the sine rule to find an angle given two sides and an angle. It requires only one formula and one calculation step, making it easier than average. The question is routine with no problem-solving or conceptual challenge beyond recalling and applying the sine rule. |
| Spec | 1.02g Inequalities: linear and quadratic in single variable1.02l Modulus function: notation, relations, equations and inequalities1.03d Circles: equation (x-a)^2+(y-b)^2=r^21.03e Complete the square: find centre and radius of circle |
\includegraphics{figure_1}
The diagram shows triangle $ABC$, with $AC = 13.5$ cm, $BC = 8.3$ cm and angle $ABC = 32°$.
Find angle $CAB$. [2]
\hfill \mbox{\textit{OCR H240/03 2019 Q1 [2]}}