a) Consider the transformation of the cosine function represented by 8(x) = 2 cos (3x 2) + 5. Explain why the phase shift is not 2 rad to the right and determine the actual phase shift. b) Consider the transformation of the cosine function represented by Explain why function has no zeros. c) Explain the difference between sin SC/2 and "() y = 3 cos (x-) + 6