| Exam Board | Edexcel |
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| Module | AEA (Advanced Extension Award) |
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| Year | 2004 |
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| Session | June |
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| Topic | Trig Equations |
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1．Solve the equation \(\cos x + \sqrt { } \left( 1 - \frac { 1 } { 2 } \sin 2 x \right) = 0 , \quad\) in the interval \(0 ^ { \circ } \leq x < 360 ^ { \circ }\) ．