| Exam Board | OCR |
|---|
| Module | C2 (Core Mathematics 2) |
|---|
| Topic | Trig Graphs & Exact Values |
|---|
4. Find all values of \(x\) in the interval \(0 \leq x < 360 ^ { \circ }\) for which
$$2 \sin ^ { 2 } x - 2 \cos x - \cos ^ { 2 } x = 1$$
giving non-exact answers to 1 decimal place.