3 The graph of a sinusoidal function with two labeled points is given below 4 points 1 18 a Determine the equation of the midline m 6 2 b Determine the amplitude c Determine the period of the function then determine the value of B for a function written in the form y A cos B x C D Assume B is positive d Write the function as a transformation of y cos x Provide justification for any horizontal shifts e Write the function as a transformation of y cos x Provide justification for any horizontal shifts