Answer:
Step-by-step explanation: 
One cycle of the function runs from 0 to 2 pi. 
To sketch one cycle one -3 sin θ, we first plot find some points that lie on it and then plot them to sketch the graph. 
We evaluate the function at 0, pi/2, and 2pi.

We now sketch the three points we found above. 
Hence, we get the graph of the function for one cycle.