Use the graph below to answer the question that follows: trig graph with points at 0, 2 and pi over 2, 0 and pi, negative 2 and 3 pi over 2, 0 and 2 pi, 2 and 5 pi over 2, 0 and 3 pi, negative 2 what trigonometric function represents the graph? f(x) = −2 cos(x − pi over 2) f(x) = −2 sin(x − pi over 2) f(x) = 2 cos(x − pi over 2) f(x) = 2 sin(x − pi over 2)what trigonometric function represents the graph?   f(x) = −2 cos(x − pi/2)    f(x) = −2 sin(x − pi/2  )    f(x) = 2 cos(x − pi/2)    f(x) = 2 sin(x −pi/2 )