| Exam Board | OCR |
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| Module | Stats 1 (Statistics 1) |
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| Year | 2018 |
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| Session | September |
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| Topic | Small angle approximation |
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3 Use small angle approximations to estimate the solution of the equation \(\frac { \cos \frac { 1 } { 2 } \theta } { 1 + \sin \theta } = 0.825\), if \(\theta\) is small enough to neglect terms in \(\theta ^ { 3 }\) or above.