| Exam Board | OCR MEI |
|---|---|
| Module | Paper 2 (Paper 2) |
| Year | 2021 |
| Session | November |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Radians, Arc Length and Sector Area |
| Type | Degree-radian conversion |
| Difficulty | Easy -1.8 This is a straightforward conversion question requiring only direct application of the conversion formula (multiply by π/180 or 180/π). Part (a) involves simple fraction manipulation, part (b) is a calculator exercise. Both are routine recall with minimal problem-solving, significantly easier than average A-level questions. |
| Spec | 1.05d Radians: arc length s=r*theta and sector area A=1/2 r^2 theta |
| Answer | Marks | Guidance |
|---|---|---|
| Answer | Marks | Guidance |
| \(65 \times \frac{\pi}{180}\) soi | M1 | may be implied by \(1.13(4464...)\) or \(0.36... \times \pi\) |
| \(\frac{13\pi}{36}\) | A1 | |
| [2] |
| Answer | Marks | Guidance |
|---|---|---|
| Answer | Marks | Guidance |
| \(12.1\) | B1 | ignore units |
| [1] |
## Question 2(a):
| Answer | Marks | Guidance |
|--------|-------|----------|
| $65 \times \frac{\pi}{180}$ **soi** | M1 | may be implied by $1.13(4464...)$ or $0.36... \times \pi$ |
| $\frac{13\pi}{36}$ | A1 | |
| | **[2]** | |
---
## Question 2(b):
| Answer | Marks | Guidance |
|--------|-------|----------|
| $12.1$ | B1 | ignore units |
| | **[1]** | |
---2
\begin{enumerate}[label=(\alph*)]
\item Write $65 ^ { \circ }$ in radians, giving your answer in the form $k \pi$, where $k$ is a fraction in its lowest terms.
\item Write 0.211 radians in degrees, giving your answer correct to $\mathbf { 1 }$ decimal place.
\end{enumerate}
\hfill \mbox{\textit{OCR MEI Paper 2 2021 Q2 [3]}}