| Exam Board | OCR MEI |
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| Module | C2 (Core Mathematics 2) |
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| Year | 2008 |
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| Session | January |
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| Topic | Trig Equations |
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3 You are given that \(\tan \theta = \frac { 1 } { 2 }\) and the angle \(\theta\) is acute. Show, without using a calculator, that \(\cos ^ { 2 } \theta = \frac { 4 } { 5 }\).