| Exam Board | CAIE |
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| Module | P2 (Pure Mathematics 2) |
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| Year | 2021 |
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| Session | June |
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| Topic | Harmonic Form |
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3 Solve the equation \(\sin \left( 2 \theta + 30 ^ { \circ } \right) = 5 \cos \left( 2 \theta + 60 ^ { \circ } \right)\) for \(0 ^ { \circ } < \theta < 180 ^ { \circ }\).