A graph. Horizontal axis, theta, scale 0 to 6 pi, by pi. Vertical axis, y, from negative 1 to 1, by 1s. A curve begins at 0 comma 1, crossing the x-axis at pi over 2 and ending at the point pi comma negative 1.
What happens to the graph as increases and gets closer to ? Explain how you know.
What happens to the graph as decreases and gets closer to ? Explain how you know.
A graph. Horizontal axis, theta, negative pi over 2 to pi over 2, by pi over 4. Vertical axis, y, negative 3 to 3, by 1s. A curve begins in the bottom left of the graph and curves up, through the points negative pi over 4 comma negative 1, 0 comma 0, and pi over 4 comma 1.