2. For the equation \( \cos 2 x=-0.32 \) a) solve for \( x \), where \( 0 \leq x<2 \pi \) \( \arccos (-0.32) \approx 1.8925 \) radialls \[ 2 \pi-1.8925 \approx 4.3907 \] b) determine the general solution.

б) \( \frac{\sin 130^{\circ}+\sin 110^{\circ}}{\cos 130^{\circ}+\cos 110^{\circ}} \)

11. if \( \cos \theta=\frac{3}{3}, \theta \in Q_{1} \) then \( \cot \theta+\operatorname{cosec} \theta= \) \( \begin{array}{llll}\text { a) } 1 & \text { b) } 25 & \text { c) } 3 & \text { d) } 4\end{array} \)

a) \( \sin \frac{\pi}{5}-\sin \frac{\pi}{10} \) б) \( \sin \frac{\pi}{3}+\sin \frac{\pi}{4} \)

22.2. а) \( \cos 15^{\circ}+\cos 45^{\circ} \) б) \( \cos 46^{\circ}-\cos 74^{\circ} \)

Define the secant function in terms of a right triangle.