Use the triangle given in GeoGebra, move point B to obtain the desired angle and, according to the values of the sides, compute the trigonometric functions.
sin(30[math]^\circ[/math])
sin(45[math]^\circ[/math])
cos(45[math]^\circ[/math])
cos(60[math]^\circ[/math])
tan(60[math]^\circ[/math])
tan(45[math]^\circ[/math])
Now, use the previous results to answer the following questions:
sin(150[math]^\circ[/math])
sin(135[math]^\circ[/math])
cos(135[math]^\circ[/math])
cos(120[math]^\circ[/math])
tan(120[math]^\circ[/math])
tan(135[math]^\circ[/math])