| Exam Board | Edexcel |
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| Module | C2 (Core Mathematics 2) |
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| Year | 2007 |
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| Session | January |
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| Topic | Trig Equations |
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6. Find all the solutions, in the interval \(0 \leqslant x < 2 \pi\), of the equation
$$2 \cos ^ { 2 } x + 1 = 5 \sin x$$
giving each solution in terms of \(\pi\).