<ol class="abc-list"><li data-list-item-id="item-1789991851871-wccp4kzkv" data-list-item-path="item-1789991851871-wccp4kzkv"><div class="list-item-paragraph"><p>Show that \(3\cos{2x} + 11\sin{x} = 3 + 11\sin{x} - 6\sin^2{x}\).</p><span class="inline-marks">[2]</span></div></li><li data-list-item-id="item-1789991852407-evwpr2kqv" data-list-item-path="item-1789991852407-evwpr2kqv"><div class="list-item-paragraph"><p>Hence, or otherwise, solve the equation \(3\cos{2x} + 11\sin{x} - 6 = 0\) for \(0^{\circ} \leq x \leq 180^{\circ}\).</p><span class="inline-marks">[3]</span></div></li></ol>

<p>Hence, or otherwise, solve the equation \(3\cos{2x} + 11\sin{x} - 6 = 0\) for \(0^{\circ} \leq x \leq 180^{\circ}\).</p>

Trigonometry

International Baccalaureate Mathematics: Analysis and Approaches Standard Level

2025 Nov TZ3 P2 Q3

2025 Nov TZ3 P2 Q3