CPM Homework Help : INT3 Problem 9-31

Sine graph, x axis labeled theta, scaled in 45 degrees, from 0 to 360 degrees, starting at the origin, rising to (90, comma 1), falling to (270, comma negative 1), rising to (360, comma 0). Points on graph, labeled as follows: just past 90 degree, A, half way between 180 & 215, B at 360, C. The graph at right represents the height above ground of a rider on The Screamer. Draw a unit circle and mark each of the corresponding locations of the labeled points. Then describe where the rider is located at each point.

Hint:

Draw a unit circle. Notice that point A is slightly past $90^\circ$ . Where is that on the unit circle?

Circle, center at the origin, with highest point on the y axis, labeled, 90 degrees.

More Help:

To locate point B, determine how the graph in the problem is scaled.