9709 P31 - Nov 2013 - Q5
1715
(i) Prove that \(\cot \theta + \tan \theta \equiv 2 \csc 2\theta\).
(ii) Hence show that \(\int_{\frac{1}{6}\pi}^{\frac{1}{3}\pi} \csc 2\theta \, d\theta = \frac{1}{2} \ln 3\).
Solutions locked. Please sign in with access to view them.