| Exam Board | OCR |
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| Module | C4 (Core Mathematics 4) |
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| Topic | Addition & Double Angle Formulae |
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6 Express \(6 \cos 2 \theta + \sin \theta\) in terms of \(\sin \theta\).
Hence solve the equation \(6 \cos 2 \theta + \sin \theta = 0\), for \(0 ^ { \circ } \leqslant \theta \leqslant 360 ^ { \circ }\).