Question

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?

Answer 1

`(0,\ 2);\ \left((\pi)/(2),\ 0\right);\ (\pi,\ -2);\ \left((3\pi)/(2),\ 0\right);\ (2\pi,\ 2);\ \left((5\pi)/(2),\ 0\right);\ (3\pi,\ -2)\\\\\text{Look at the picture}\\\\Answer:\ \boxed{y=2\cos(x)}`