Timothy Gan
2022 ASRJC J2 MYCT Q7
(a)
If $\theta $ is small such that ${{\theta }^{3}}$ and higher powers of $\theta $ may be neglected, express $\frac{\cos \theta }{1+\sin 2\theta +\cos 2\theta }$ in the form $\frac{1}{2}+a\theta +b{{\theta }^{2}}$ where $a$ and $b$ are constants to be found.
[4]
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