1. For the function below, find: a. a positive sine function b. a negative sine function c. a positive cosine function d. a negative cosine function For full credit one of the above must have the phase shift = 0 Show your work/reasoning for full credit! You don't need to do them in order. Circle all final answers and label a, b, , or d Remember, a function is an equation, so don't forget the = Note: the graph shows one cycle of a periodic function