9. In this question you must show detailed reasoning. Solutions relying entirely on calculator technology are not acceptable.
- Solve, for \(0 < x \leqslant \pi\), the equation
$$2 \sec ^ { 2 } x - 3 \tan x = 2$$
giving the answers, as appropriate, to 3 significant figures.
- Prove that
$$\frac { \sin 3 \theta } { \sin \theta } - \frac { \cos 3 \theta } { \cos \theta } \equiv 2$$
| VIAV SIHI NI III IM I ON OC | VIIIV SIHI NI JIIIM I ON OO | VAYV SIHI NI JIIYM ION OC |