3) \( \frac{\operatorname{tg}^{2} \alpha}{1+\operatorname{tg}^{2} \alpha}= \)

What is the definition of the tangent function in relation to a right triangle?

а) \( \sin 40^{\circ}+\sin 16^{\circ} \) б) \( \sin 20^{\circ}-\sin 40^{\circ} \)

Define the secant function in terms of a right triangle.

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 \( \cot \theta+\operatorname{cosec} \theta= \) \( \begin{array}{llll}\text { a) } 1 & \text { b) } 25 & \text { c) } 3 & \text { d) } 4\end{array} \)