Y=sin(x)

 ^ y
 |
 1                 + 
 |           +           +
 |       +                    + 
 |    +                          +      
 |  +                              +  
0|+                                  +  pi
-+------------------+-----------------+---> x
 |                                     +
 |
 |
 |
 |
 |
 |