| Exam Board | OCR MEI |
|---|
| Module | Paper 3 (Paper 3) |
|---|
| Year | 2023 |
|---|
| Session | June |
|---|
| Topic | Reciprocal Trig & Identities |
|---|
1 In this question you must show detailed reasoning.
The obtuse angle \(\theta\) is such that \(\sin \theta = \frac { 2 } { \sqrt { 13 } }\).
Find the exact value of \(\cos \theta\).