Unit T Big Question #4

4. Why do sine and cosine NOT have asymptotes, but other four trig. graphs do? Use unit circle ratios to explain. 
Explanation: Sine will never be able to have asymptotes because sine= y/r ,and r will always be 1. For Cosine it will be x/r and r will always be one and it will not have the need to be an asymptote. For the other trig. functions they will always be undefined and will need asymptotes.