6.2 \( \left.\quad[\sin (-\theta)+\cos (360-\theta)] \left\lvert\, \cos (90-0)+\frac{\sin \theta}{\tan \theta}\right.\right] \)

4 Find 2 coterminal angles for each: \( 115^{\circ} \quad \frac{17 \pi}{12} \)

20. Resolver la ecuación \( 2 \cos ^{2} \varepsilon-\cos \varepsilon-1=0 \)

35. Calcular: \( F=2 * \sqrt{1-2 \cos \left(\frac{\pi}{3}\right)=\operatorname{sen}\left(\frac{\pi}{3}\right)} \) \( \begin{array}{llll}\text { A) } \frac{\sqrt{3}}{2} & \text { B) } \frac{1}{2} & \text { C) } \sqrt{3}+1 & \text { D) } 1-\sqrt{3}\end{array} \)

Em um triângulo retângulo, se um dos ângulos agudos mede 30 graus e a hipotenusa mede 12 cm, calcule a medida do cateto oposto a esse ângulo usando o Teorema de Pitágoras.

Relaciona ambas columnas \( y \) selecciona la respuesta correcta. \[ \begin{array}{ll}\text { A. } \operatorname{soc}\left(\frac{\pi}{3}\right) & \text { 1. } \sqrt{3} \\ \text { B. } \tan \left(\frac{\pi}{3}\right) & \text { 2. } \frac{1}{\sqrt{3}} \\ \text { C. } \operatorname{cose}\left(\frac{\pi}{3}\right) & \text { 3. } 2 \\ \text { D. } \cot \left(\frac{\pi}{3}\right) & \text { 4. } \frac{2}{\sqrt{3}}\end{array} \]