What are x and y components of a vector 12.8 angle 36 degrees

Which equation matches the graph shown ?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Sketch one cycle if the cosine function y=2cos2theta