9709 P33 - Nov 2012 - Q2
165
(i) Express \(24 \sin \theta - 7 \cos \theta\) in the form \(R \sin(\theta - \alpha)\), where \(R > 0\) and \(0^\circ < \alpha < 90^\circ\). Give the value of \(\alpha\) correct to 2 decimal places.
(ii) Hence find the smallest positive value of \(\theta\) satisfying the equation \(24 \sin \theta - 7 \cos \theta = 17\).