\( [ \sin ( - \theta ) + \cos ( 360 - \theta ) ] [ \cos ( 90 - \theta ) + \frac { \sin \theta } { \tan \theta } ] \)

\( \frac { \sin 2 A \cdot \sin A + \sin 6 A \cdot \sin 3 A } { \cos 2 A \cdot \sin A + \cos 6 A \cdot \sin 3 A } \)

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

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

Reference Angles Determine the reference angles for the following degrees and radians. Remember if it starts as a negative degree or radian, you have to find the positive coterminal first. \( \begin{array}{ll}\text { 9. } 175^{\circ} & \text { 10. }-410^{\circ} \\ \text { 11. } \frac{5 \pi}{8} & \text { 12. }-\frac{7 \pi}{3}\end{array} \)

Six Trigonometric Functions on the Unit Circle Find all six trig functions for the following radians on the unit circle. \( \begin{array}{ll}\text { 19. } t=\pi & \text { 20. } t=\frac{4 \pi}{3}\end{array} \)