| Exam Board | Edexcel |
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| Module | Paper 1 (Paper 1) |
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| Session | Specimen |
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| Topic | Differentiating Transcendental Functions |
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10. Given that \(\theta\) is measured in radians, prove, from first principles, that the derivative of \(\sin \theta\) is \(\cos \theta\)
You may assume the formula for \(\sin ( A \pm B )\) and that as \(h \rightarrow 0 , \frac { \sin h } { h } \rightarrow 1\) and \(\frac { \cos h - 1 } { h } \rightarrow 0\)