| Exam Board | OCR |
|---|
| Module | C3 (Core Mathematics 3) |
|---|
| Year | 2014 |
|---|
| Session | June |
|---|
| Topic | Addition & Double Angle Formulae |
|---|
2 By first using appropriate identities, solve the equation
$$5 \cos 2 \theta \operatorname { cosec } \theta = 2$$
for \(0 ^ { \circ } < \theta < 180 ^ { \circ }\).