| Exam Board | CAIE |
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| Module | P2 (Pure Mathematics 2) |
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| Year | 2009 |
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| Session | June |
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| Topic | Reciprocal Trig & Identities |
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5 Solve the equation \(\sec x = 4 - 2 \tan ^ { 2 } x\), giving all solutions in the interval \(0 ^ { \circ } \leqslant x \leqslant 180 ^ { \circ }\).