9709 P31 - Jun 2015 - Q5
1714
(a) Find \(\int (4 + \tan^2 2x) \, dx\).
(b) Find the exact value of \(\int_{\frac{1}{4}\pi}^{\frac{1}{2}\pi} \frac{\sin(x + \frac{1}{6}\pi)}{\sin x} \, dx\).
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